Preheat oven to 350°F. Lightly grease standard muffin pan or line with paper baking cups.
Stir together muffin ingredients; fill muffin cups 2/3 full and set aside. In small bowl, blend together topping ingredients. Sprinkle 1 tablespoon topping mixture onto each muffin; press lightly into batter.
Bake 18-22 minutes.