Crockpot Cowboy Butter French Onion Flank Steak

There’s something incredibly comforting about coming home to a warm, aromatic kitchen filled with the scent of slow-cooked goodness. This Crockpot Cowboy Butter French Onion Flank Steak is a family favorite that requires minimal effort and delivers maximum flavor. It’s the perfect dump-and-go dish for busy weeknights or lazy weekends when you want a hearty meal without the hassle. The tender, juicy steak and caramelized onions simmered in a rich, savory au jus is a dish that will have everyone asking for seconds!

The beauty of this recipe lies in its simplicity. With just a few key ingredients and minimal prep time, you can have a restaurant-quality meal on your table in no time. The slow cooker does all the work, infusing the flank steak with a depth of flavor that’s hard to achieve with other cooking methods. Whether you’re a seasoned home cook or a beginner, this dish is sure to become a staple in your meal rotation.

Why You’ll Love This Crockpot Recipe

• Easy 5-minute prep and set it and forget it slow cooking.
• Tender, succulent flank steak and caramelized onions in a rich, flavorful au jus.
• Perfect for meal prepping or a last-minute dinner solution.
• A hearty, comforting dish that’s perfect for any occasion.

Key Ingredients & Flavor Notes

The star of this dish is the flank steak, a lean and flavorful cut of beef. The slow cooking process transforms it into a tender, melt-in-your-mouth delight. The Vidalia onions add a sweet, caramelized flavor that complements the beef beautifully. The garlic-herb cowboy butter infuses the dish with a rich, savory taste, while the beef consommé adds depth and complexity to the au jus. The au jus mix ties everything together, creating a harmonious blend of flavors that will have you licking your plate clean!

Chef’s Tips for Foolproof Slow Cooking

To ensure your Crockpot Cowboy Butter French Onion Flank Steak turns out perfectly every time, follow these tips:

1. Sear the flank steak before adding it to the Crockpot for extra flavor and texture.
2. Use fresh, high-quality ingredients for the best results.
3. Make sure to trim any excess fat from the flank steak to avoid a greasy dish.
4. If you prefer a thicker au jus, you can mix a bit of cornstarch with water and stir it into the Crockpot during the last hour of cooking.

Ingredients

• 2 lbs. thinly sliced flank steak strips
• 2 large Vidalia onions, thinly sliced
• 1 can (10.5 oz) beef consommé
• 2 sticks garlic-herb cowboy butter
• 1 packet au jus mix

Step-by-Step Instructions

1. Place the thinly sliced flank steak strips in the Crockpot.
2. Pile the thinly sliced Vidalia onions over the beef.
3. Pour the beef consommé over the top.
4. Place the two sticks of garlic-herb cowboy butter on top of the onions and beef.
5. Sprinkle the au jus mix evenly over the entire dish.
6. Cover and cook on LOW for 8 hours or on HIGH for 4 hours.
7. Stir gently before serving to combine the flavors.

What to Serve With It & Storage Tips

This Crockpot Cowboy Butter French Onion Flank Steak pairs beautifully with a variety of sides. Creamy mashed potatoes are a classic choice, as they soak up the rich au jus perfectly. Roasted vegetables, such as carrots and Brussels sprouts, add a nice contrast in texture and flavor. For a heartier meal, serve it with crusty bread or dinner rolls to mop up every last drop of the savory gravy.

To store leftovers, allow the dish to cool to room temperature, then transfer it to an airtight container and refrigerate for up to 5 days. Reheat gently in the Crockpot or on the stovetop over low heat, adding a splash of water or beef broth if the au jus has thickened too much.

Frequently Asked Questions

Question?

Can I use a different cut of beef?

While flank steak is the star of this dish, you can use other cuts of beef such as chuck roast or round steak. However, keep in mind that the cooking time may vary, and you might need to adjust the seasoning to suit the different cut.

Question?

Can I make this dish in the oven?

Yes, you can adapt this recipe for the oven. Sear the flank steak and onions, then transfer them to a Dutch oven or oven-safe pot with the consommé and cowboy butter. Cover and bake at 325°F (165°C) for about 2.5 to 3 hours, or until the beef is tender. Stir in the au jus mix before serving.

Question?

Can I freeze the leftovers?

Yes, this dish freezes well. Allow it to cool completely, then transfer it to a freezer-safe container and freeze for up to 3 months. Thaw overnight in the refrigerator before reheating gently on the stovetop or in the Crockpot, adding a bit of water or broth if needed to thin out the au jus.