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Slow Cooker Sweet And Sour Beef Roast

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This Slow Cooker Sweet and Sour Beef Roast features tender beef cooked in a tangy-sweet tomato sauce with bell peppers, vinegar, and brown sugar — a comforting, flavorful meal that’s both hearty and easy to prepare.

Ingredients

  • 3–4 lbs beef chuck roast
  • 1 ½ tsp salt
  • 1 tsp black pepper
  • 2 tbsp olive oil or vegetable oil
  • 1 large onion, sliced
  • 3 cloves garlic, minced
  • 1 (15 oz) can tomato sauce
  • ½ cup brown sugar, packed
  • ¼ cup apple cider vinegar (or white vinegar)
  • 2 tbsp soy sauce
  • 1 tbsp Worcestershire sauce
  • 1 tsp Dijon mustard (optional)
  • 1 red bell pepper, sliced
  • 1 green bell pepper, sliced
  • 1 tbsp cornstarch (optional, for thickening)
  • 2 tbsp chopped fresh parsley (for garnish)

Instructions

  1. Pat the beef roast dry and season generously with salt and pepper on all sides.
  2. Heat oil in a large skillet over medium-high heat and sear the roast for 2–3 minutes per side until browned. Transfer to the slow cooker.
  3. In the same skillet, sauté the onion and garlic for 2 minutes until fragrant. Add tomato sauce, brown sugar, vinegar, soy sauce, Worcestershire sauce, and Dijon mustard. Stir to combine, scraping up any browned bits.
  4. Pour the sauce over the roast in the slow cooker and add the sliced red and green bell peppers around the beef.
  5. Cover and cook on Low for 8–9 hours or High for 4–5 hours, until the roast is tender and easily shreds with a fork.
  6. Remove the roast from the slow cooker and shred or slice as desired.
  7. Optional: Mix cornstarch with 1 tbsp water and stir into the sauce. Set slow cooker to High and cook for 10–15 minutes until thickened.
  8. Return beef to the sauce and stir to coat well.
  9. Garnish with chopped parsley and serve warm over rice, mashed potatoes, or noodles.

Notes

  • For extra flavor, sear the roast before slow cooking — it enhances the sauce richness.
  • Add pineapple chunks during the last hour of cooking for a tropical twist.
  • Thicken the sauce with cornstarch or simmer uncovered for 20 minutes at the end.
  • This dish reheats and freezes well, perfect for meal prep.

Nutrition

Find it online: https://thefamilycooking.com/slow-cooker-sweet-and-sour-beef-roast/