Grilled Roast Beef Sandwiches - cooking recipe

Ingredients

1 medium onion, sliced
1 medium green pepper, sliced
1/2 lb fresh mushrooms, sliced
3 cloves garlic, minced
2 tablespoons vegetable oil
salt and pepper
8 slices sourdough bread
16 slices colby-monterey jack cheese or 16 slices swiss cheese
8 slices deli roast beef (or left-over roast beef, sliced thin)
1/2 cup butter or 1/2 cup margarine, softened
garlic salt

Preparation

In a large skillet, cook the onion, green pepper, mushrooms, and garlic in hot oil, until tender; stir frequently; sprinkle with salt and pepper to taste.
On four slices of bread, place two slices cheese, two slices of beef, and one-fourth of vegetable mixture on each bread slice.
Top with remaining cheese and bread slices.
Spread butter on the outsides of the bread slices.
Sprinkle lightly with garlic salt.
On a hot griddle or in a hot skillet, grill sandwiches for 3-4 minutes on each side or until golden brown.
Serve hot.