Steak-House Sliders with Mushrooms and Blue Cheese

By DeliciouslyDished

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Ingredients

• 1 pounds ground beef sirloin
• 1/2 pounds ground beef chuck
• 2 teaspoons Dijon mustard
• 2 teaspoons Worcestershire sauce
• 1 teaspoons chopped thyme leaves
• 1 1/2 teaspoons garlic paste, or half that amount fresh garlic crushed through a garlic press
• 1/2 teaspoons kosher salt
• 1/2 teaspoons freshly ground black pepper
• 2 tablespoons butter
• 1 large onion, cut into thin strips
• 1 packages (8-ounce) sliced fresh cremini mushrooms
• 1/3 cups dry white wine
• 8 slider buns, split
• 3 tablespoons creamy mustard spread (such as Dijonnaise)
• 1 cups baby arugula
• 3 ounces creamy blue cheese or Gorgonzola cheese, cut into small pieces

Preparation

Step 1

In a large bowl, gently combine ground sirloin, ground chuck, mustard, Worcestershire sauce, thyme, 1/2 tsp of the garlic paste (or 1/4 tsp of the fresh garlic), salt, and pepper. Form into eight 2 1/2-inch-diameter patties of equal thickness; refrigerate.
Melt butter in a large skillet over medium high heat. Add onions and sauté for 4 minutes or until translucent. Add mushrooms and sauté for 4 more minutes. Stir in remaining garlic. Deglaze skillet with wine; let wine cook down until almost evaporated. Remove pan from heat and keep it warm.
Prepare an outdoor grill with a medium-hot fire (or heat a stovetop grill pan over medium heat). Toast buns on grill 1 to 2 minutes, until lightly toasted. Grill sliders 2 to 3 minutes per side for medium-rare doneness.
Spread bun bottoms with Dijonnaise, then top with arugula and sliders. Spoon the mushroom mixture over each slider and top with blue cheese and bun tops.