Pumpkin Apple Streusel Muffins

I made these for the first time last year. I had some ladies over for brunch & served these & they loved them.

2 1/2 C flour
2 C sugar
1 T pumpkin pie spice
1 tsp baking soda
1/2 tsp salt
2 eggs, lightly beaten
1 C pumpkin
1/2 C vegetable oil
2 C peeled, finely chopped apples

STREUSEL TOPPING:

2 T flour
1/2 tsp cinnamon
1/4 C sugar

TOPPING: Combine in small bowl. Cut in 4 tsp butter until mixture is crumbly.
MUFFINS: In a large bowl, combine first 5 ingredients; set aside. In a medium bowl, combine eggs, pumpkin and oil. Add liquid ingredients to dry ingredients; stir just until moistened. Stir in apples. Spoon batter into greased or paper lined muffin pans, filling 3/4 full. Sprinkle with streusel topping over batter. Bake at 350 degrees for 35-40 min. or until toothpick inserted in muffin comes out clean.