# What you'll need:
→ Burger
01 - 1 pound ground beef (80/20 blend)
02 - 1 teaspoon salt
03 - 0.5 teaspoon black pepper
04 - 1 tablespoon Worcestershire sauce
05 - 1 tablespoon olive oil
06 - 8 ounces sliced cremini or button mushrooms
07 - 1 small onion, thinly sliced
08 - 4 slices Swiss cheese
09 - 4 burger buns
10 - 2 tablespoons mayonnaise (optional)
11 - 2 tablespoons Dijon mustard (optional)
12 - 1 cup baby arugula or lettuce leaves
→ Waffle Fries
13 - 1.5 pounds frozen waffle fries
14 - 1 tablespoon olive oil (for baking)
15 - Salt, to taste
# Method:
01 - Set the oven to 425°F to prepare for baking the waffle fries.
02 - Place waffle fries in a single layer on a baking sheet, drizzle with olive oil, and bake for 22 to 28 minutes, turning once, until golden and crisp. Season with salt.
03 - In a bowl, combine ground beef, salt, black pepper, and Worcestershire sauce. Gently mix and form into 4 patties, slightly larger than the buns.
04 - Heat olive oil in a skillet over medium-high heat. Add sliced onions and mushrooms, cooking for 7 to 8 minutes until softened and golden. Remove and set aside.
05 - In the same skillet or on a grill, cook patties for 3 to 4 minutes per side to reach medium doneness.
06 - Place sautéed mushrooms and onions atop each patty, then cover each with a slice of Swiss cheese. Cover the pan and cook for 1 to 2 minutes to melt the cheese.
07 - Optionally toast buns and spread mayonnaise and/or Dijon mustard on the bottom halves. Add arugula or lettuce, then the burger patties with toppings, and cover with the top halves.
08 - Serve the assembled burgers hot alongside the crispy waffle fries.
