Steak Diane with Cognac Pan Sauce
Classic pan-fried sirloin steak topped with a rich and tangy Cognac cream sauce infused with mushrooms and Dijon mustard. This french-inspired beef ready in about 50 minutes blends steaks, 8 oz each sirloin steak, salt, freshly ground black pepper into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 550 calories and feeds 2, so a small batch covers several meals across the week without taking over the fridge. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 2 steaks, 8 oz each sirloin steak
- 1 tsp salt
- 1 tsp, freshly ground black pepper
- 3 tbsp, divided unsalted butter
- 1 tbsp olive oil
- 2 small, finely chopped shallots
- 4 oz, sliced button mushrooms
- 1/4 cup cognac
- 1 tbsp Dijon mustard
- 1/3 cup heavy cream
- 1 tbsp, chopped fresh parsley
Instructions
- Step 1: Season 2 sirloin steaks with 1 tsp salt and 1 tsp freshly ground black pepper on both sides. Let rest at room temperature for 20 minutes.
- Step 2: Heat 1 tbsp olive oil and 1 tbsp unsalted butter in a skillet over medium-high heat until butter foams. Add steaks and cook 4 minutes per side for medium-rare. Remove steaks and keep warm.
- Step 3: Reduce heat to medium and add 2 tbsp unsalted butter to the skillet. Add 2 finely chopped shallots and 4 oz sliced button mushrooms, sauté for 4-5 minutes until softened and golden.
- Step 4: Carefully add 1/4 cup Cognac to deglaze the pan, stirring and scraping up browned bits. Let the alcohol cook off for 1-2 minutes.
- Step 5: Stir in 1 tbsp Dijon mustard and 1/3 cup heavy cream. Simmer for 3 minutes until sauce thickens and coats the back of a spoon.
- Step 6: Return steaks to the pan for 1 minute to warm in the sauce. Sprinkle with 1 tbsp chopped fresh parsley before serving.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Steak Diane with Cognac Pan Sauce take to make?
Total time is about 50 minutes (30 min prep + 20 min cook). A small batch typically covers several meals in the week — store as the recipe directs.
How do I store leftover Steak Diane with Cognac Pan Sauce?
Transfer to an airtight jar and refrigerate for up to 5–7 days. Most sauces freeze well for up to 2 months — portion into small containers or freezer bags so you can thaw only what you need. Stir before serving; cream- or yogurt-based sauces may separate on standing.
Can I substitute ingredients in Steak Diane with Cognac Pan Sauce?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Steak Diane with Cognac Pan Sauce for a different number of people?
The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
What goes well with Steak Diane with Cognac Pan Sauce?
French beef like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.
