1 can (15 ounces) black beans, drained and slightly mashed
1 tablespoon vinegar
1/4 teaspoon vegetable oil
1 cup shredded Monterey Jack cheese or Mexican blend
1 small onion, finely chopped
1 tomato, finely chopped
Arrange tortilla chips on a large baking sheet. Mix beans with vinegar and oil; spread on tortilla chips then top with shredded cheese. Broil until cheese is melted and bubbly. Cool slightly, top with chopped onion and tomato, and serve.