Ingredients
1.5 lbs beef sirloin, thinly sliced against the grain
8 oz cremini mushrooms, sliced
1 small onion, finely chopped
3 garlic cloves, minced
3 tbsp butter (grass-fed)
2 tbsp xanthan gum
1.5 cups beef broth (no sugar added)
1 cup heavy cream
1 cup sour cream (full-fat, unsweetened)
2 tbsp chopped fresh parsley
Salt and black pepper to taste
Instructions
Preheat oven to 350°F (180°C)
Heat 1 tbsp butter in a skillet over medium-high heat. Sear beef strips for 1-2 minutes per side. Remove from pan
In the same skillet, melt remaining butter. Sauté onion and garlic until translucent
Add mushrooms; cook until moisture evaporates, 6-8 minutes. Stir in xanthan gum
Pour in beef broth, scraping up browned bits from pan. Bring to a simmer
Reduce heat, stir in heavy cream and sour cream. Cook 5-7 minutes until sauce thickens
Return beef and any juices to the pan. Gently stir to coat. Season with parsley, salt, and pepper
Rest 5 minutes before serving (optional: garnish with extra parsley)
Notes
Use beef cuts like sirloin, strip steak, or tenderloin for best results
For thicker sauce, cook 5 minutes longer before adding sour cream
Store leftovers in airtight containers up to 3 days.
Keto-friendly substitute: Serve over cauliflower rice or zucchini noodles
- Prep Time: 15
- Cook Time: 30
- Category: Dinner
- Method: Stovetop
- Cuisine: American
- Diet: Keto
Nutrition
- Serving Size: 1 serving
- Calories: 540
- Sugar: 1g
- Sodium: 600mg
- Fat: 48g
- Saturated Fat: 25g
- Carbohydrates: 4g
- Fiber: 0g
- Protein: 34g
- Cholesterol: 180mg