Mushroom Swiss Burgers

By KeyIngredient

Ingredients

• 2 T reduced sodium soy sauce
• 1 T olive oil
• 1/4 tsp kosher salt
• 6 oz whhole portabella mushrooms
• 3 T onion soup mix, divided
• 1/4 Hellmans mayo with olive oil
• 1 1/2 lb. lean ground beef
• 8 slices swiss cheese
• 4 hamburger buns

Preparation

Step 1

1. Place in bag: soy sauce, oil, salt. Shake to blend. Discard stems and gills (dark brown layers) from mushrooms; add mushrooms to bag. Seal bag and shake to coat mushrooms; let stand 10 min. (or up to 1 hour) to marinate.

2. Combine 1 T soup mix with mayo; set aside. Combine beef and 2 T soup mix just until blended; from into 4 patties.

3. Place mushrooms on grill; grill 3 min. Add burger to grill. Turn mushrooms; grill 3-4 more min. or until tender. Remove from grill

4. Cut mushrooms into 8 equal slices. Place 2 slices and 2 cheese slices on top of each burger during last minute of grill time to melt cheese.

5. Spread 1 T mayo mixture over buns.