Ingredients
Scale
1 tablespoon olive oil
1 1/2 lb (650 g) beef fillet steak, flattened with a meat mallet and cut into strips
3 tablespoons (40 g) butter
1 large onion, sliced
1/2 lb (250 g) chestnut mushrooms, sliced
1/4 cup (30 g) almond flour
2 cups (500 ml) beef stock
1 tablespoon wholegrain mustard
1 cup (200 ml) sour cream
Salt and pepper to taste
Instructions
- Heat the olive oil in a cast iron skillet or deep pan over high heat.
- Sprinkle the beef with a bit of salt and pepper and add half of it to the pan. Cook for 1 minute without turning it, then use a pair of kitchen tongs to turn the beef.
- Cook until browned, remove from the skillet and repeat with the second batch, then remove the beef and set aside.
- Add the butter to the same skillet and allow it to melt, then add the onions and cook for 1-2 minutes.
- Add the mushrooms and cook on medium-high heat until golden.
- Stir in the almond flour, then add half the beef stock and stir continuously until the flour dissolves and there are no lumps. Add the rest of the beef stock and bring to a simmer.
- Lower the heat and stir in the mustard and sour cream. Simmer until the sauce has the consistency of heavy cream, then add the cooked beef and stir to combine.
- Serve over mashed cauliflower or your favorite low-carb noodles.
Notes
- For a dairy-free version, use ghee or avocado oil instead of butter and unsweetened coconut cream instead of sour cream.
- Cook the beef in batches to ensure a proper sear and avoid steaming.
- Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat gently on the stovetop.
- Prep Time: 10 min
- Cook Time: 20 min
- Category: Main Course
- Method: Stovetop
- Cuisine: Russian-Inspired
- Diet: Gluten-Free, Keto, Low-Carb
Nutrition
- Serving Size: 1/4 of recipe
- Calories: 482 calories
- Sugar: 2 grams sugar
- Sodium: 505 milligrams sodium
- Fat: 40 grams fat
- Saturated Fat: 18 grams saturated fat
- Unsaturated Fat: 18 grams unsaturated fat
- Trans Fat: 0.5 grams trans fat
- Carbohydrates: 3 grams carbohydrates
- Fiber: 1 grams fiber
- Protein: 47 grams protein
- Cholesterol: 145 milligrams cholesterol