Lamb Tenderloin Crockpot Recipe: Tender Herbed Lamb Dinner (Print Version)

Lamb Tenderloin Crockpot Recipe delivers fork-tender lamb with minimal effort. My go-to for rich flavor and easy weeknight meals. Just set it and forget it!

# Recipe Info:

Prep Time: 15 Minutes minutes
Cook Time: 4 Hours minutes
Total Time: 19 minutes
Servings: 4-6 Servings
Difficulty: Beginner
Cuisine: Mediterranean-inspired
Dietary: Gluten-Free (ensure broth is GF)

# Ingredients:

→ Main Ingredients

01 - 1-1.5 lbs lamb tenderloin
02 - 1.5 cups beef broth
03 - 1/2 cup dry red wine
04 - 1 medium yellow onion, chopped
05 - 2 medium carrots, chopped
06 - 4 cloves garlic, minced

→ Flavor Boosters

07 - 2 sprigs fresh rosemary
08 - 3 sprigs fresh thyme
09 - 2 bay leaves
10 - 1 tbsp Dijon mustard
11 - 1 tbsp Worcestershire sauce

→ Seasonings & Spices

12 - 2 tbsp olive oil
13 - 1 tsp salt
14 - 1/2 tsp black pepper
15 - 1 tsp smoked paprika
16 - 1/2 tsp dried oregano

→ Finishing Touches (Optional)

17 - 1 tbsp cornstarch
18 - 1 tbsp cold water
19 - Fresh parsley, for garnish

# Instructions:

01 - Okay, first things first, get that lamb tenderloin seared. This step, my friend, is NOT optional. Heat a little olive oil in a skillet over medium-high heat. Pat your lamb dry—this is key for a good sear! When the oil shimmers, carefully place the lamb in the pan. Listen to that sizzle! Sear it for 2-3 minutes per side until it's beautifully browned all over. Don't crowd the pan, or it'll steam instead of sear, and we don't want that. I always forget to open a window before this, and then the smoke alarm has its little moment, but it's worth it for the flavor!
02 - Remove the seared lamb and set it aside. In the same skillet (don't clean it, those browned bits are flavor gold!), add a bit more oil if needed. Toss in your chopped onions and carrots. Sauté them for about 5-7 minutes until they start to soften and get a little color. The kitchen will start to smell amazing, I swear. Then, add your minced garlic and cook for just another minute until it's fragrant. Don't let it burn, that's a sad smell, and it makes everything bitter.
03 - Now for the fun part! Pour in the red wine. Use a wooden spoon to scrape up all those delicious browned bits from the bottom of the pan – that's called deglazing, and it's where so much of the flavor lives! Let the wine simmer for a couple of minutes until it reduces slightly. It'll smell rich and wonderful. I always take a little sniff at this point; it's so satisfying to watch it transform.
04 - Transfer the sautéed veggies and the wine mixture to your slow cooker. Nestle the seared lamb tenderloin right on top. Add the beef broth, Dijon mustard, Worcestershire sauce, smoked paprika, dried oregano, fresh rosemary, fresh thyme, and bay leaves. Give it a gentle stir to combine everything, making sure the lamb is nestled in the liquid. It'll look a little rustic, but trust the process!
05 - Cover your crockpot and cook on low for 3.5 to 4 hours, or on high for 2 to 2.5 hours. Honestly, I find low and slow gives the most tender, melt-in-your-mouth results. The house will smell incredible as it cooks, a comforting aroma that just hugs you. Resist the urge to peek too often; every time you lift the lid, you lose heat, and that means longer cooking times. Patience, my friend!
06 - Once the lamb is fall-apart tender (it should shred easily with a fork!), carefully remove it from the crockpot and set it aside to rest. If you want a thicker sauce, you can make a quick slurry with a tablespoon of cornstarch mixed with a tablespoon of cold water, then stir it into the hot liquid in the crockpot. Cook on high for another 15-20 minutes, stirring occasionally, until it thickens to your liking. Remove the bay leaves and herb sprigs. Shred or slice the lamb, then return it to the sauce. Ladle generously over your favorite sides, and prepare for deliciousness!

# Notes:

01 - Always sear your lamb tenderloin first, even if it feels like an extra step. That Maillard reaction creates a depth of flavor you just can't get otherwise. I learned this the hard way after a few bland crockpot attempts!
02 - Leftovers store beautifully in an airtight container in the fridge for 3-4 days. The sauce tends to thicken up even more overnight, which I actually love, but a splash of extra broth when reheating can thin it out if you prefer.
03 - If you don't have red wine, you can totally use extra beef broth, or even a splash of balsamic vinegar for a bit of tang. I tried it with white wine once, and it was okay, but the red just has that richer vibe.
04 - Serve this Lamb Tenderloin Crockpot Recipe with creamy polenta, mashed potatoes, or even just some crusty bread to soak up all that incredible sauce. A simple green salad on the side balances out the richness perfectly.

# Tools You'll Need:

01 - Slow cooker (Crockpot)
02 - Large skillet
03 - Wooden spoon
04 - Sharp knife
05 - Cutting board

# Nutrition Facts (Per Serving):

Calories: 450
Total Fat: 25g
Total Carbohydrate: 15g
Protein: 40g

Back