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–+ servings

Simple Leftover Roast Beef Stroganoff

Sally Thompson
Looking for easy dinner ideas using what you already have in the fridge? This Simple Leftover Roast Beef Stroganoff is the ultimate comfort food that transforms leftover roast beef into a creamy, satisfying dish the whole family will love. With tender beef, earthy mushrooms, and a rich sour cream sauce served over rice or noodles, it’s a go-to for busy weeknights or when you need quick dinner food ideas. This hearty, flavorful meal is perfect if you're into quick dinners, easy recipes, or creative ways to use leftovers.
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Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Course Dinner
Cuisine American
Servings 4 servings
Calories 390 kcal

Ingredients
  

  • 2 tablespoons olive oil or unsalted butter
  • 1 small onion finely chopped
  • 2 garlic cloves minced
  • 8 oz fresh mushrooms sliced
  • 2 tablespoons all-purpose flour
  • 1 cup beef broth
  • 1 tablespoon Worcestershire sauce
  • 1 tablespoon Dijon mustard
  • 1/2 cup sour cream
  • 2 cups cooked roast beef sliced or shredded
  • Salt and black pepper to taste
  • Fresh parsley chopped
  • Cooked rice or egg noodles for serving

Instructions
 

  • 1. In a large skillet over medium heat, add olive oil or butter. Sauté the chopped onion for 3–4 minutes until soft and translucent. Add garlic and cook for 30 seconds.
  • 2. Add the mushrooms and sauté for 6–8 minutes until browned and tender.
  • 3. Sprinkle in the flour and stir for 1–2 minutes to form a roux.
  • 4. Slowly pour in beef broth while stirring. Add Worcestershire sauce and Dijon mustard. Simmer for 5–6 minutes until thickened.
  • 5. Stir in the roast beef and heat through for 3–4 minutes.
  • 6. Remove from heat and fold in sour cream gently until fully incorporated. Season with salt and pepper to taste.
  • 7. Serve over rice or noodles and garnish with fresh parsley.

Notes

Always turn off the heat before adding sour cream to avoid curdling.
Slice beef thinly against the grain to keep it tender.
Browning the mushrooms properly deepens the flavor and adds richness to the sauce.

Nutrition

Serving: 1portionCalories: 390kcalCarbohydrates: 18gProtein: 26gFat: 23gSaturated Fat: 9gPolyunsaturated Fat: 12gCholesterol: 85mgSodium: 460mgFiber: 2gSugar: 4g
Keyword beef stroganoff, dinner ideas, easy recipe, leftover roast beef, quick dinners
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