Apple Pumpkin Muffins

I made a batch of these muffins for a playdate with Tara, Allegra and the kitties. They requested it, so here it is...
Strange combo apples and pumpkin, but it seems to come together and taste yummy.
I didnt have some of the ingredients, so in parenthesis()are my substitutions and it still turned out good.

Ingredients
2 1/2 cups all-purpose flour (I used whole wheat flour)
2 cups sugar
1 tablespoon pumpkin pie spice (I used nutmeg, ground cloves and cinnamon combo)
1 teaspoon baking soda
1/2 teaspoon salt
2 eggs
1 cup canned or cooked pumpkin
1/2 cup vegetable oil (I used half cup melted butter)
2 cups finely chopped peeled apples
STREUSEL:
1/4 cup sugar
2 tablespoons all-purpose flour
1/2 teaspoon ground cinnamon
4 teaspoons cold butter or margarine


DIRECTIONS
In a bowl, combine the first five ingredients. In another bowl, combine the eggs, pumpkin and oil; stir into dry ingredients just until moistened. Fold in apples. Fill paper-lined muffin cups two-thirds full. In a small bowl, combine sugar, flour and cinnamon. Cut in butter until crumbly. Sprinkle over batter.
Bake at 350 degrees for 35-40 minutes or until golden brown. Cool for 5 minutes before removing from pans to wire racks