4 servings

How to Make It

Step 1

Melt 1 tablespoon butter in a large nonstick skillet over medium-high heat. Add sliced mushrooms and onion, and sauté 5 minutes or until tender. Drain.

Step 2

Spread mayonnaise on 1 side of half of bread slices; top with Monterey Jack cheese and tomato. Spoon mushroom mixture evenly over tomato; top with American cheese. Cover with remaining bread slices.

Step 3

Spread 1 tablespoon butter on 1 side of each sandwich. Cook sandwiches, buttered side down, in a hot nonstick skillet or griddle over medium heat until browned.

Step 4

Spread remaining 1 tablespoon butter evenly on ungrilled side; turn and cook until lightly browned.

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