Cinnamon Sugar Swirl Muffins

Preheat your oven to 375°F (190°C). Line a muffin tin with paper liners or grease the cups.

Mix the Dry Ingredients:
In a large bowl, whisk together the flour, granulated sugar, brown sugar, baking powder, salt, ground cinnamon, and nutmeg.

Mix the Wet Ingredients:
In a separate bowl, whisk together the melted butter, milk, eggs, and vanilla extract until smooth.

Combine Wet and Dry Ingredients:
Gradually add the wet ingredients to the dry ingredients, stirring until just combined. Be careful not to overmix.

Prepare the Cinnamon Sugar Swirl:
In a small bowl, mix together the brown sugar, granulated sugar, and ground cinnamon to make the cinnamon sugar swirl.

Assemble the Muffins:
Fill each muffin liner halfway with the batter. Sprinkle a layer of the cinnamon sugar mixture on top of the batter, then top with more muffin batter. Use a toothpick or skewer to gently swirl the cinnamon sugar into the batter.

Bake the Muffins:
Bake in the preheated oven for 18-20 minutes or until a toothpick inserted into the center comes out clean.

Cool and Serve: