Lasagna Sandwiches

1/8 cup sour cream

1 tablespoon chopped onion

1/4 teaspoon oregano

4 slices Italian or other white bread

4 bacon strips, halved and cooked

4 slices tomato

2 (wide) slices Mozzarella cheese

2 tablespoons butter or margarine

Combine first 3 ingredients; spread on four slices of bread. Top each with four bacon pieces, two tomato slices, and a slice of cheese. Top with remaining bread. In a skillet over medium heat, melt 2 tablespoons butter. Cook sandwiches on both sides until bread is lightly browned and cheese is melted, adding more butter if necessary. Makes 2 servings.