Quick and Simple Slow Cooked Steak Diane Casserole

The Simple Slow-Cooked Steak Diane Casserole is a modern twist on the classic Steak Diane, transforming it into a hearty casserole that melds the rich flavors of the traditional dish with the ease and convenience of slow cooking. This casserole version features tender pieces of steak simmered in a flavorful mushroom and mustard sauce, enriched with the subtle hint of brandy or Worcestershire sauce. Perfect for a comforting family dinner or as a gourmet meal for gatherings, this dish brings the essence of a fine dining experience into the coziness of your home, with the slow cooker doing most of the work.

Why You’ll Love Simple Slow-Cooked Steak Diane Casserole

• Rich and Flavorful: Enjoy the luxurious taste of Steak Diane in a hearty, comforting casserole.
• Effortless Preparation: The slow cooker simplifies the cooking process, making gourmet flavors accessible on any night.
• Versatile: Easily adaptable to your taste preferences and perfect for any occasion, from casual dinners to special celebrations.
• Make-Ahead Convenience: Ideal for preparing ahead of time, allowing the flavors to deepen and meld together beautifully.

Ingredients Notes For Simple Slow-Cooked Steak Diane Casserole

• Steak: Use tender cuts such as sirloin or ribeye, cut into bite-sized pieces for easy eating.
• Mushrooms: Sliced mushrooms add earthiness and texture to the sauce.
• Mustard and Worcestershire Sauce: Provide the tangy, umami-rich backbone of the Diane sauce.
• Brandy: Adds depth and a traditional flavor to the sauce, though it can be substituted with additional Worcestershire sauce or beef broth for a non-alcoholic version.
• Cream: Enriches the sauce, making it silky and luxurious.
• Garlic and Onions: Form the aromatic base of the casserole, enhancing its savory notes.

Recipe Steps

1. Brown the Steak: Lightly brown the steak pieces in a skillet before adding them to the slow cooker to enhance their flavor.
2. Sauté the Aromatics: In the same skillet, cook the onions and garlic until softened, then add the mushrooms until they release their moisture.
3. Deglaze: Add brandy (or substitute) to the skillet, scraping up any browned bits for extra flavor.
4. Combine Ingredients: Transfer the steak, aromatics, and mushrooms to the slow cooker. Stir in mustard, Worcestershire sauce, and beef broth.
5. Slow Cook: Cover and cook on low for 6-8 hours, until the steak is tender.
6. Finish the Sauce: Stir in cream during the last 30 minutes of cooking to thicken the sauce.
7. Serve: Adjust seasoning with salt and pepper. Serve the casserole hot, garnished with fresh parsley or thyme.

Storage Options

• Refrigerate: Store leftovers in an airtight container for up to 3 days.
• Freeze: Freeze in suitable containers for up to 1 month. Thaw overnight in the refrigerator before reheating gently.