Mix streusel topping together in small bowl and set aside.
Preheat oven. Prepare muffin tin, cups, liners, etc.
Mix dry ingredients in one bowl. Mix wet ingredients in another bowl. Combine.
Scoop into muffin tin, cups, liners, etc. and sprinkle on streusel topping.
Bake at 350* for 20-25 minutes.
Rest for 5 minutes, if you can stand it!