Summer Squash Skillet

Melt butter in large skillet over medium-high heat. Add onion; stir to coat with butter. Cover; cook 3 minutes. Uncover; reduce heat to medium; cook and stir about 3 minutes or until onion is golden brown.

Add squash, salt, and pepper. Cover; cook 5 minutes, stirring once. Add tomato; cook uncovered about 2 minutes or until squash is tender. Stir in basil and sprinkle with cheese.