Apple Streusal Muffins

1/3 cup butter
2 Tbsp brown sugar
2 Tbsp sugar
1 egg
2 cups flour
4 tsp baking powder
1/4 tsp cinnamon
1 cup milk
1 cup apples, peeled and diced small
1/4 cup nuts, chopped
1/2 tsp salt

For the streusel mixture:
1/2 cup brown sugar
2 Tbsp flour
2 Tbsp butter, melted
2 tsp cinnamon

Cream together butter and sugars. Add eggs and blend.  Mix together dry ingredients.  Add to creamed mixture, alternating with milk.  Fold in apples and nuts.  Spoon into muffin tins, about 1/3 full.  Add 1 tsp of streusel mixture.  Then add remaining batter.  Sprinkle top with remaining streusel mixture.  Bake at 375 for around 20 minutues or till they test done with a toothpick.