California Delight

In skillet, cook bacon over medium heat until lightly browned; drain on paper towels. Mash avocado with a fork; stir in mayonnaise, onion, lemon juice and curry powder. Place muffin halves on broiler rack; spread with avocado mixture. Top with bacon, tomato and cheese. Broil about 5 inches from heat just until cheese melts. Serve immediately.