Preheat your oven to 350°F. Line a muffin tin with paper liners.

Mix the applesauce, melted butter, sugar, egg, and vanilla extract in a large bowl.

Whisk together the flour, baking soda, baking powder, salt, and cinnamon in a separate bowl.

Combine the wet ingredients and dry ingredients, mixing just until combined. Do not overmix.

Mix the melted butter, brown sugar, and cinnamon to swirl in a small bowl.

Fill each muffin cup halfway with the muffin batter. Spoon a small amount of the cinnamon swirl mixture onto each muffin, then top with more muffin batter.

Use a toothpick or skewer to swirl the cinnamon-brown sugar mixture into the muffin batter for a swirled effect.

Bake in the oven for 20-25 minutes or until a toothpick inserted into the center comes out clean and the outside of the muffins are golden brown.

While the muffins are baking, prepare the cream cheese glaze by whisking the softened cream cheese, powdered sugar, vanilla extract, and enough milk to achieve a drizzling consistency.

Allow the muffins to cool in the tin for a few minutes, then transfer them to a wire rack to cool completely.

Drizzle the cream cheese glaze over the cooled muffins.