Step 1

Preheat oven to 350 degrees. Line muffin tin with papers.

Step 2

Add butter and sugar to a large mixing bowl and beat until light and fluffy.

Step 3

Beat in the egg and vanilla.

Step 4

Stir in the applesauce.

Step 5

Beat in the flour and baking soda until just combined.

Step 6

Spoon mixture into the prepared muffin tin, filling 2/3 of the way full.

Step 7

To prepare the streusel, add the sugar, flour, and cinnamon to a medium bowl and stir to combine.

Step 8

Add the butter and use a fork or pastry cutter to cut the butter into the flour until the mixture is made of coarse crumbs.

Step 9

Sprinkle the mixture evenly over all of the muffins.

Step 10

Bake for 22 minutes or until a tester comes out clean.

Step 11

When muffins are cool, whisk together the powdered sugar and milk and drizzle over the tops.