Apple Streusel Muffins

A friend from work shared this recipe with me.  The crumbly topping is what makes them especially delicious.

What you'll need
2 cups Flour
1/2 cup Sugar
3 tsp Baking powder
1 tsp Salt
1/2 cup Butter
1 Medium apple, peeled, cored and diced
2 tsp Grated lemon rind
1 Egg
2/3 cup Milk
1/4 cup Chopped nuts of your choice (I like pecans)
2 tbsp Sugar

How to
1.  Sift flour, 1/2 cup sugar, baking powder and salt in a bowl.  Cut in butter until mixture is crumbly.  Reserve 1/2 cup for the topping and set aside.

2.  Stir the apple and 1 tsp of the rind into the flour mixture.

3.  In a small bowl, beat the egg with the milk.  Add it to the flour mixture, stirring lightly.

4.  Grease a muffin tin and fill each individual muffin cup 3/4 full.

5.  Blend reserved crumbs with remaining rind, nuts and 2 tbsp sugar.  Sprinkle over muffins.

6.  Bake in a 425°F oven for 20 minutes.  Makes 12 muffins.