Classic Diane Sauce for Steak | CookOS

Classic Diane Sauce

Name: Classic Diane Sauce for Steak
Prep time: 5 min
Cook time: 15 min
Total time: 20 min
Yield: 4 servings
Cuisine: American
Ingredients: 2 tbsp butter; 1 tsp vegetable oil; 1 medium onion, diced; 2 cloves garlic, diced; 2 tbsp brandy; 2 tsp tomato paste; 2 tsp Dijon mustard; 2 tbsp Worcestershire sauce; salt, to taste; black pepper, to taste; 1/4 cup beef broth; 1 cup heavy cream

Classic Diane sauce is a silky, deeply savory pan sauce built on butter, brandy, and Dijon mustard—a retro steakhouse staple that elevates any cut of meat in under 10 minutes.

🌍American 🏷️Diane sauce 🏷️Steak sauce 🏷️Pan sauce 🏷️Creamy sauce 🏷️Retro

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🏷️Classic

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Total

20 min

Servings

Difficulty

Easy

Est. Cost

$23–$38

Recipe Source

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Ingredients

2 tbsp butter
1 tsp vegetable oil
1 medium onion, diced
2 cloves garlic, diced
2 tbsp brandy
2 tsp tomato paste
2 tsp Dijon mustard
2 tbsp Worcestershire sauce
salt, to taste
black pepper, to taste
1/4 cup beef broth
1 cup heavy cream

12 Ingredients

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Instructions

1
In a hot pan, melt the butter with the oil.
2
Add the diced onion and sauté for about 5 minutes, stirring occasionally, until softened and lightly browned.
3
Add the diced garlic and cook for another 30 seconds until fragrant.
4
Pour in the brandy to deglaze the pan, scraping up any browned bits from the bottom. Cook for about 1 minute.
5
Stir in the tomato paste, Dijon mustard, and Worcestershire sauce.
6
Cook, stirring, for about 2 minutes to let the mixture thicken.
7
Season with salt and pepper to taste.
8
Add the beef broth and stir for about 90 seconds.
9
Pour in the heavy cream and bring the sauce to a simmer.
10
Reduce the heat to low and let the sauce continue to simmer and thicken for 6-7 minutes.

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Tips & Notes

Pro tips

Dice onion and garlic small—they should soften and dissolve into the sauce, not remain chunky.
Use medium to medium-low heat throughout to emulsify the butter smoothly and prevent the sauce from breaking.
Add brandy off heat or ignite it in the pan to burn off harsh alcohol and deepen the flavor—this step adds authentic steakhouse depth.
Whisk constantly after adding butter to create a silky, cohesive emulsion; if the sauce looks thin, it will thicken as it cools slightly.

Substitutions

Brandy → cognac, bourbon, or dry white wine (flavor profile shifts but remains savory)
Dijon mustard → whole-grain mustard (coarser texture, slightly less sharp)
Worcestershire → soy sauce or tamari (1:1 ratio; adds umami without the anchovy note)

Storage & make-ahead

Store cooled sauce in an airtight container in the fridge up to 3 days. Reheat gently over low heat, whisking in a splash of stock or cream to restore silkiness.

Common Questions

Can I make Diane sauce without brandy?

Yes. Replace brandy with cognac, bourbon, or dry white wine in equal measure. The flavor will shift slightly but remain complex.

How do I prevent the sauce from breaking or separating?

Keep heat at medium to medium-low, avoid boiling vigorously, and whisk constantly once you add butter. If it breaks, remove from heat and slowly whisk in a splash of cold cream or stock.

Can I make this sauce ahead?

Yes. Prepare through the brandy step, cool, and refrigerate up to 2 days. Reheat gently over low heat, whisking in cream or stock as needed to restore consistency.