Apple Cinnamon Muffins

What to do on New Year's Day? Everyone is hungover and everything is closed. I decided to have a Dexter marathon and bake something although I was pretty limited in baking options since I couldn't grab anything at the store. I found this recipe which was easy, yummy and you most likely have all the ingredients in your house!

Ingredients
Muffins:
2 cups flour
1 cup sugar
3 tsp. baking powder
1 1/2 tsp. cinnamon
1/2 tsp. baking soda
1/2 tsp. salt
2 eggs
1 cup sour cream
1/4 cup margarine
1 1/2 cup chopped, peeled apples
Topping:
1/4 cup sugar
3 tbsp. flour
1 tsp. cinnamon
2 tbsp. margarine
1/4 cup oats

Directions
1. Preheat oven to 400 degrees F.
2. Combine all of the ingredients for the muffins in a large bowl, starting with the dry ingredients. Pour batter into paper muffin cups or a greased baking muffin pan.
3. For the topping, combine sugar, flour, cinnamon and oats. Cut in butter until the mixture resembles coarse crumbs. Sprinkle over each muffin.
4. Bake 20-23 minutes. Cool, but these are delicious if served warm!