Friday, January 03, 2014

Recipe for Slow Cooker Pork Sirloin Tip Roast with Balsamic Vinegar, Rosemary, and Red Onions

Slow Cooker Pork Sirloin Tip Roast with Balsamic Vinegar, Rosemary, and Red Onions
An inexpensive pork sirloin tip roast gets tender and delicious when cooked in the slow cooker with balsamic vinegar, rosemary, and red onions.

(Here's this week's Phase One Friday and also the daily pick for our month of Daily Phase One Recipes.  You can see all the recipes from the month by clicking that link.  Cook this delicious pork roast over the weekend and then use leftovers over salad or inside lettuce wraps during the week.  Check after the recipe for Phase One Flashbacks from this day in 2012 and 2013.)

Food blogging can be pretty frustrating at times, but especially when you've made a recipe that tasted great, but the photos didn't really make the food look good.  I made this Slow Cooker Pork Sirloin Tip Roast with Balsamic Vinegar, Rosemary, and Red Onions for the second time and the final photos still weren't anything I was happy with, when I noticed this photo of the pork roast in the slow cooker.  I decided that although it's a pretty casual photo it did show how tasty the pork roast looked when it was done.  And since I still have a broken arm (two more weeks, fingers crossed) I decided to share this delicious slow cooker pork roast with the photo I had.  No worries, right?

This was another recipe where I used one of those very inexpensive and lean pork sirloin tip roasts that come in a four-pack at Costco.

We started by grinding up a mixture of black pepper, Penzey's Pork Chop Seasoning, and Rosemary and Garlic Herb Rub and rubbed it all over the pork roast.  If you don't have those exact spice and herb blends, any seasonings with similar ingredients can work.

Then we heated some olive oil in a large frying pan and browned the roast well on all sides.  Put the roast in the slow cooker.

Deglaze the pan with the beef stock, simmer to reduce by half, then strain to remove any big pieces of spices or congealed juice from the meat.

Then add the balsamic vinegar and cook about 5 minutes.

Pour the liquid over the roast and cook for about 2 hours on high.

At this point you can remove the roast and put the onions in the bottom if you want them really well done.

We just turned the roast over, piled the onions in on top of the meat, and cooked it for about 90 minutes more on high.

By then it was looking pretty delicious!

We turned off the slow cooker but kept the meat in there to stay warm while we simmered the liquid for about 20 minutes so it was a little more concentrated.

Then slice the meat, arrange the onions around it, and pour the sauce over.  Serve hot.

Slow Cooker Pork Sirloin Tip Roast with Balsamic Vinegar, Rosemary, and Red Onions
(Makes about 6 servings; recipe created by Kalyn and Jake.

pork sirloin tip roast, 2-3 lbs. before trimming
2 tsp. Rosemary and Garlic Herb Rub (or any blend with similar flavors will work)
1 tsp. Penzey's Pork Chop Seasoning (or any blend with similar flavors will work)
1/2 tsp. fresh ground black pepper
1 T olive oil
1 cup beef stock
1/2 cup balsamic vinegar
3-4 small red onions, cut into thick slices and separated into rings

I used a Crock-Pot 2.5-Quart Slow Cooker for this recipe, but a slightly larger size will work.

Trim visible fat from the pork sirloin tip roast.  (There will not be much fat.)  Use a spice grinder or mortar and pestle to grind together the spices; then rub the meat all over with the spice mix, using it all.  Heat the oil in a large frying pan over medium-high heat and brown the pork roast well on all sides.  (This will take 8-10 minutes; don't rush the browning step.)  Put the browned roast in the slow cooker.

Add the beef stock to the frying pan, turn the heat to high, and simmer until the stock is reduced by half, scraping any browned bits from the bottom.  When it's reduced to 1/2 cup, strain the mixture, put it back in the frying pan, add the balsamic vinegar and cook about 5 minutes more.  Pour the liquid over the meat and cook on high for about 2 hours (or on low for 4-5 hours.)

When the meat has cooked on high for about 2 hours (or on low for 4-5 hours), peel the red onions, cut into thick slices, and separate them into rings.  You can either remove the roast and put the onions in the bottom (for more well-done and more vinegar-flavored onions or turn the meat over and pile the onions around it (for less well done and less vinegar-flavored onions.)

Turn slow cooker to high if you had been cooking on low and cook with the onions added for about 60-90 minutes more.   Taste the sauce and see if you'd like it a little more concentrated, and if so, remove the meat, pour the sauce into a pan, and simmer for about 20 minutes on medium-high heat (or until it is as concentrated as you'd like it.)  I turned off the slow cooker but put the roast back inside it to stay warm while I reduced the liquid.

Slice roast across the grain into slices about 3/4 inch thick, arrange on a plate with the onions, and serve with the sauce poured over or in a bowl on the side.

Click Here for Printer Friendly Recipe

South Beach Suggestions:
These extra lean pork roasts are perfect for the South Beach Diet, which recommends meat with less than 10% fat.  This recipe is a great choice for any phase of the diet.

Phase One Flashbacks for January 3:
January 3, 2012:  Slow Cooker Spicy Ground Beef and Bean Soup
January 3, 2013:  Chicken and Shredded Cabbage Salad with Mustard and Celery Seed

Nutritional Information?
I chose the South Beach Diet to manage my weight partly so I wouldn't have to count calories, carbs, points, or fat grams, but if you want nutritional information for a recipe, I recommend entering the recipe into Calorie Count, which will calculate it for you. 

More Tasty Ideas with Pork Roast:
(Recipes from other blogs not always South Beach Diet friendly; check ingredients.)
Cuban-Style Roast Pork ~ The Kitchn
Slow Cooker Bavarian Pork Sirloin Tip Roast with Sour Cream Gravy ~ Kalyn's Kitchen
Slow Roasted Spice Rubbed Pork Shoulder ~ Sass and Veracity
Slow Cooker Pork Sirloin Roast with Spicy Peanut Sauce ~ Kalyn's Kitchen
Apple-Cranberry Stuffed Pork Roast ~ Simply Recipes
(Want even more recipes? I find these recipes from other blogs using Food Blog Search.)

Blogger Disclosure:
Posts may include links to my affiliate account at, and Kalyn's Kitchen earns a few cents on the dollar if readers purchase the items I recommend, so thanks for supporting my blog when you shop at Amazon!
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  1. Loved the recipe. I just think pork sirloin and rosemary are such great friends, aren't they?

  2. So many things that I make don't end up on my blog because of blah photos! BUT, your photos of this roast are mouthwatering, especially that very first one. I love your slow cooker meals!!

  3. You are so sweet! It's frustrating isn't it, because you know if the photo looks bad no one will try the recipe.

  4. This looks so good. Next time I go to Costco I will have to look for the 4 pack of pork sirloin. Looks moist and tender.

  5. I've been really happy with the pork sirloin tip roasts. They are super lean though; best to use a cooking method that adds some liquid.

  6. Hi Kalyn,
    I love those little sirloin roasts--always looking for new ways to prepare them. Thanks for another idea.

    Also, I know what you mean about photos that don't do the food justice. Frustrating, isn't it.

    Get well soon.

  7. Thanks Paula! I guess those hard-to-photograph foods are helping us become better photographers, lol!

  8. This photo made me hungry. I can't wait to try this.

  9. This sounds like a perfect recipe for the cold weather we are all being hit with. I am a new fan of yours, I dislike wasting too. Keep up the good work.

  10. Oh Pam, so glad to hear that. That's really all I'm hoping for with the photos (I'll never be a food stylist!)

    Thanks Marlene. So glad you're enjoying the blog.

  11. What a bummer! Thanks for notifying Feedblitz that I wasn't getting your mail;you're back in my inbox every day now. Sending healing energy for a speedy recovery, Winanne


  12. Winanne, glad it worked. And I'm counting the days; cast off in about 9 more days!

  13. That looks really really good... especially for a chilly sunday afternoon.
    Sunday Roast it is!

  14. Please don't worry about responding - just put the energy into healing. Wanted to let you know how darn auspicious this post is. My oven died, completely and finally, just before the blizzard. And last night I took out a Costco pork lump to roast.... well duh! So, I thought I'd have to try the slow cooker - and here in my inbox is this lovely recipe. Can't wait to get the smells going! Thank you for cooking, for being uncanny - everything.

  15. How could I not respond to a nice comment like that? (Can type a little, but long things take quite a while!)

  16. I LOVE a good slow-cooked piece of pork and this recipe sounds fabulous. Droolworthy photos, too :)

  17. We started the pork in our slow cooker (a pretty big one), and went out to shop for a new stove. When we got back, the roast smelled so good! I added the onions while we got settled/fed the dogs. Because the cooker was big, the onions didn't submerge, and I just cooked them in liquid while it simmered down. I was lovely, tasty, and the onions just make the sauce. Tomorrow I'll make a sandwich with the pork and the drained onions - yum.

    I think you could do this with just garlic salt and some rosemary, but the rubs added flavor, and the sauce kept the meat from drying into wood. Thank you for a great and timely recipe!

  18. Glad you liked it and also good to hear it will work with a larger slow cooker.

  19. This looks amazing... I am a good cook, but my weak point is pork. I love all things Costco, so I will go find it and try it. Rosemary, Balsamic vinegar,, love, love .... can't wait to make it.

  20. Don't you just hate that - something that tastes like heaven but looks like something the dog dragged in?? And roasts are particularly bad for that - bug brown lumps of meat! But I love this photo - makes me want to grab a fork :) Sorry to hear about the arm - what did you do??

  21. Jeanne I fell on the ice and broke my arm. Ugh. But I'm getting my cast off in 8 more days, yaay!

  22. Went to Costco today and bought the roasts. I have never cooked a pork roast, so I am glad you told us what to buy. Can't wait to make it, and am happy it is a small roast. Put the other 3 in the freezer for now and can't wait to experiment with some of the other recipes later on. Thanks!

  23. I know 3 posts on 1 recipe...I made it and it was wonderful... total success. I was going to be out, and didn't want to overcook it so I put it 4 hours on low and then it auto switched to warm for 3-4 hours on warm. I added the onions when I got home, but after a half hour I couldn't wait so transferred the juice and onions to a saucepan and reduced. Added a little ginger to the rub as I didn't have the pork chop spice mix and when I looked on the Penzey website I noticed it mentioned ginger. I was able to make the other mix. Highly recommend,sliced up really nicely too, didn't shred. Thanks again!

  24. I just sat down to find ways to use the pork sirloin roast that came with my meat CSA and was thrilled to see one from my friend - YOU! It sounds delicious and I just printed a copy so that I can prepare it for dinner on Sunday with the family. xoxox M

  25. Michelle, yaay! Hope things are going okay for you.

  26. Excellent recipe! I modified it slightly and cooked in a pressure cooker rather than a slow cooker. I also made a red and yellow pepper risotto that was a great addition to this dish. Thank you for sharing.

  27. I love using my slow cooker! Love this flavor combination! Thanks, Kalyn!

  28. Lisa, so glad you like it, enjoy!

  29. Happy New Year, Kalyn!

    I never cooked pork sirloin before, can you imagine THAT?

    I am not sure I've paid attention to this cut, I will have to look for it at our grocery store. Of course, I still need to get a crockpot, but that is on my list of things to get in the future....

  30. Hi Sally; Happy New Year to you too!

    You must get a slow cooker, and then try this recipe. I really like the pork sirloin.

  31. Gorgeous, Kalyn! I'd serve it over rice (I know, a no-no for SB) but those juices look too good not to! Some braised greens to go with and I think I've got a dinner covered this coming week!

  32. Kelley, phase one is only two weeks, after that rice would be great!

  33. This looks great… don't know how I missed it last year. Have to check my Costco to see if they have that cut; I'm not familiar with it. But I'm certain I'll love it. It's typical Kalyn… great ingredients, has to be delicious!!

  34. Thanks Doren, what a nice comment. I discovered the pork sirloin at Costco, tried it because of the price, and now I'm sold on it.

  35. Thanks Pam! I loved it. Really liking those pork sirloin roasts from Costco.


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