Description

This Horseradish Pot Roast is a tender, flavorful beef chuck roast cooked low and slow in a slow cooker with a tangy horseradish-infused sauce. The roast is first seared to develop a rich crust, then slowly braised with onions, garlic, tomato paste, and fresh thyme, creating a savory and aromatic dish perfect for a comforting meal. The sauce is thickened and enriched with sour cream for a creamy finish, making this pot roast a delicious, hearty main course.

Ingredients

Scale

Meat

3–4 pound boneless beef chuck roast

Seasonings & Aromatics

1 ½ teaspoons salt
½ teaspoon ground black pepper
1 chopped yellow onion (about 1 ½ cups)
2 tablespoons minced garlic (about 6 cloves)
3 sprigs fresh thyme (or 1 teaspoon dried thyme)

Liquids & Sauces

1 cup beef broth
3 tablespoons tomato paste
⅓ cup prepared horseradish (more or less to taste)
1 tablespoon Worcestershire sauce
¼ cup sour cream

Thickening Agent

3 tablespoons cornstarch
3 tablespoons cold water

Instructions

Sear the Roast: Pat the 3-4 pound boneless beef chuck roast completely dry with paper towels. Season all sides evenly with 1 ½ teaspoons salt and ½ teaspoon ground black pepper. Heat a large skillet over medium-high heat and sear the roast on all sides until a rich brown crust forms, about 3 minutes per side. This browning step adds deep flavor to the meat and sauce.
Add to Slow Cooker: Place the seared roast into the bottom of a large slow cooker. Top the roast with the chopped yellow onion, distributing it evenly over the meat to add sweetness and aroma as it cooks.
Prepare Sauce: Using the same skillet used for searing, lower the heat to medium. Pour in 1 cup of beef broth and use a wooden spoon to scrape up all the flavorful browned bits stuck to the pan. Turn off the heat, then whisk in 3 tablespoons tomato paste, ⅓ cup prepared horseradish, 2 tablespoons minced garlic, and 1 tablespoon Worcestershire sauce until well combined.
Pour Sauce Over Roast: Pour the horseradish sauce mixture evenly over the roast and onions in the slow cooker.
Add Thyme and Cook: Add 3 sprigs of fresh thyme on top. Cover the slow cooker and cook on LOW for 9-10 hours or on HIGH for 6-8 hours, until the roast is fork-tender and flavors have melded.
Thicken Sauce: In the last 45-60 minutes of cooking, skim off any excess fat from the surface of the liquid in the slow cooker. In a small bowl, whisk together 3 tablespoons cornstarch with 3 tablespoons cold water to create a slurry. Stir the slurry into the slow cooker to thicken the sauce as it finishes cooking.
Remove Roast: When the roast is tender and the sauce has thickened, discard the thyme sprigs. Transfer the meat to a plate and cover with aluminum foil to keep warm.
Incorporate Sour Cream: Whisk a little bit of the hot roast liquid into ¼ cup sour cream in a small bowl to temper it and make it runny and warm. Then stir this mixture back into the slow cooker to add creaminess and balance the sharp horseradish flavors.
Serve: Shred or slice the pot roast as preferred, add it back into the sauce in the slow cooker, and serve warm. This meal pairs well with mashed potatoes or roasted vegetables for a hearty, classic dinner.

Notes

Adjust the amount of prepared horseradish based on your heat and flavor preference.
For best results, dry the roast thoroughly before searing to ensure a good crust forms.
You can substitute dried thyme if fresh is unavailable, but fresh thyme adds more vibrant flavor.
Skimming fat before thickening the sauce helps keep the dish from becoming greasy.
Leftovers store well refrigerated for up to 3 days and can be reheated gently on the stove or microwave.
If you do not have cornstarch, flour can be used as an alternative thickener.

Prep Time: 15 minutes
Cook Time: 6 to 10 hours (depending on slow cooker setting)
Category: Main Course
Method: Slow Cooking
Cuisine: American

Keywords: pot roast, horseradish pot roast, slow cooker beef roast, easy slow cooker recipes, comfort food, braised beef, horseradish beef, hearty dinner