Apple Streusel Muffins

I have a bounty of apples to put to good use and this recipe was perfect. Mixing all the ingredients in one bowl and not peeling the apples make it a quick muffin to whip up. The streusel topping gives it a little crunch that's delicious!

Apple Streusel Muffins From Fall Baking
2 eggs beaten
1 cup sour cream
1/4 cup butter, melted
2 cups flour
1 cup sugar
3 tsp baking powder
1 1/4 tsp cinnamon
1/2 tsp salt
1/2 tsp baking soda
1 medium apple, unpeeled, finely chopped

Streusel topping:
1/4 cup sugar
3 T flour
1/4 tsp cinnamon
2 T butter, softened

Heat oven to 400. Grease bottom only of 18 muffin cups or line with paper baking cups. Make streusel topping (mix dry ingredients and then cut in butter until crumbly); set aside. Beat eggs, sour cream and butter in medium bowl. Stir in flour, sugar, baking powder, cinnamon, salt and baking soda until just moistened. Stir in apple. Divide batter evenly among muffin cups. Sprinkle each with about 1 teaspoon topping. Bake 20 to 25 minutes or until toothpick inserted in center comes out clean. Immediately remove from pan.