In a small bowl combine topping ingredients. Set aside.
Muffins
Preheat oven to 350 degrees.
Grease muffin tin, or place baking cups into muffin tin.
Wet Ingredients: In a large bowl stir together the applesauce, granulated sugar, oil, eggs and milk until thoroughly mixed.
Dry Ingredients: In a separate bowl stir together all of the remaining ingredients except for the walnuts.
Combine: Add the dry ingredients to the applesauce mixture and stir until combined.
Fold in the walnuts and spoon batter into your muffin tin. Add until 2/3 full.
Sprinkle the sugar topping over the muffins.
Bake until a toothpick inserted into the middle comes out clean. Check after 20 minutes and add additional time gradually. Do not over bake. My muffins took 30 minutes.
Allow muffins to cool 10 minutes in the pan, then run a knife around the edges to loosen the muffins, or apply a fork as leverage to "pop" the muffins out of the tin. Remove to a wire rack to finish cooling.
Notes
These taste great as is, but softened butter or cream cheese applied is just magic. For a different texture one could use chunky applesauce. Cover tightly to store.