Preheat oven to 400 degrees. Line muffin tin with paper baking cups.
Combine egg, oil and milk. Add Frosted Flake crumbs. Let stand 5 minutes. Stir in brown sugar.
Meanwhile, stir together remaining ingredients. Add to cereal mixture. Stir just until moistened. Spoon into baking cups. Bake 20-25 minutes. If desired brush tops with melted butter and sprinkle with cinnamon and sugar mixture. Serve warm. Makes 12 muffins.