In large bowl, combine first five ingredients and set aside
In medium bowl, combine eggs, pumpkin, and oil
Add wet to dry, stir until just moistened
Stir in apples
Spoon batter into greased or paper-lined muffin cups, filling ¾ full
Sprinkle Streusel topping over batter
Bake in preheated 350° F oven for 35-40 minutes, or until toothpick comes out clean