apple strudel muffins

This past weekend, I was looking for some wintry baked goodies to make when I came across this fabulous recipe for apple strudel muffins. Going off some of the comments readers had left, I decided to go with the variation below in order to keep the muffins nice and moist. Unfortunately, I ran out of time and wasn't able to finish them off with the strudel topping, but even without it they turned out really well:

INGREDIENTS
2 cups all-purpose flour
1 teaspoon baking powder
1/2 teaspoon baking soda
1/2 teaspoon salt
1 teaspoon cinnamon
1/2 teaspoon nutmeg
1/2 cup butter
1/2 cup white sugar
1/2 cup packed brown sugar
2 eggs
1 teaspoons vanilla
1 1/2 cups chopped apples
1 tablespoon apple sauce

1/3 cup packed brown sugar
1 tablespoon all-purpose flour
1/8 teaspoon ground cinnamon
1 tablespoon butter

DIRECTIONS
1. Preheat oven to 375 degrees F (190 degrees C). Grease a 12 cup muffin pan.
2. In a medium bowl, mix flour, baking powder, baking soda, salt, cinnamon and nutmeg.
3. In a large bowl, beat together butter and eggs until smooth. Mix in vanilla. Mix sugar and apples together. Add to flour mixture. Gradually blend in the flour mixture to the butter and eggs. Spoon the mixture into the prepared muffin pan.
4. In a small bowl, mix brown sugar, flour and cinnamon. Cut in butter until mixture is like coarse crumbs. Sprinkle over tops of mixture in muffin pan.
5. Bake 20 minutes in the preheated oven, or until a toothpick inserted in the center of a muffin comes out clean. Allow to sit 5 minutes before removing muffins from pan. Cool on a wire rack.