Preheat oven to 350 degrees and line 2 12-cup muffin tins with liners (or spray with non-stick cooking spray). In a large bowl, mix the eggs, pumpkin and apple pie filling until combined. In a smaller, separate bowl, mix the flour, sugar, pumpkin pie spice, baking soda and salt. Add to the wet ingredients and stir just until everything is combined.
Using an ice cream scoop, fill the cup cake liners about 3/4 of the way full. In a small bowl, combine the ingredients for the streusel topping. Using a fork or knife, keep cutting through the butter until the mixture resembles coarse crumbs. Distribute evenly over the muffin batter.
Bake for 30-35 minutes until a toothpick inserted into the center of a muffin comes out clean.
(Source: Adapted from allrecipes.com)
https://simplycleanandfitmom.com/2013/10/pumpkin-apple-streusel-muffins/