# Ingredient List:
→ Burger
01 - 1 pound ground beef (80/20 blend)
02 - 1 teaspoon salt
03 - ½ teaspoon black pepper
04 - 1 tablespoon Worcestershire sauce
05 - 1 tablespoon olive oil
06 - 8 ounces cremini or button mushrooms, sliced
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 - 1½ pounds frozen waffle fries
14 - 1 tablespoon olive oil (if baking)
15 - Salt, to taste
# Steps:
01 - Set the oven to 425°F to prepare for baking waffle fries.
02 - Arrange waffle fries in a single layer on a baking sheet, drizzle with olive oil, and bake for 22 to 28 minutes, turning halfway through until golden and crisp. Season with salt.
03 - Combine ground beef, salt, black pepper, and Worcestershire sauce in a bowl; mix gently and shape into four patties slightly larger than the buns.
04 - Heat olive oil in a skillet over medium-high heat. Add sliced onions and mushrooms; sauté for 7 to 8 minutes until softened and golden. Remove from heat and set aside.
05 - Using the same skillet or 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 add a slice of Swiss cheese. Cover with a lid and let stand 1 to 2 minutes until cheese melts.
07 - Toast the buns if desired. Spread mayonnaise and/or Dijon mustard on the bottom half, add arugula or lettuce, followed by the burger patty with toppings. Complete with the top bun.
08 - Present the burgers hot alongside the crisp waffle fries.
