Trainwreck Teriyaki Burgers

Ingredients (15)

• 1 lb. green beans, ends trimmed
• 8 ounces sliced mushrooms
• 1/4 cup low sodium teriyaki sauce
• 2 Tablespoons olive oil
• Kosher salt and pepper
• 1 lb. ground chuck
• 1 teaspoon minced garlic
• 1 Tablespoon teriyaki sauce
• 1 teaspoon salt
• Pinch black pepper
• 1 Tablespoon butter
• 3 thick slices Swiss cheese (smoked Swiss is especially good!)
• 1/2 cup french fried onions
• Mayonnaise and teriyaki sauce, for serving
• 3 sesame seed buns