Prepare the Muffin Batter

1. Preheat Oven: Preheat your oven to 350°F (175°C). Grease a mini muffin tin or line it with paper liners.
2. Combine Dry Ingredients: In a large mixing bowl, whisk together the flour, sugar, baking powder, and salt until well combined.
3. Mix Wet Ingredients: In a separate bowl, beat the egg, then add the milk, melted butter, and vanilla extract. Mix until smooth.
4. Combine Wet and Dry Ingredients: Pour the wet ingredients into the dry ingredients and stir gently until just combined. Be careful not to overmix; a few lumps are okay.
5. Optional Add-ins: If you’re adding chocolate chips, blueberries, or cinnamon, gently fold them into the batter now.
6. Fill the Muffin Tin: Spoon the batter into the mini muffin tin, filling each cup about 2/3 full.
7. Bake: Place the muffin tin in the preheated oven and bake for 15-20 minutes or until a toothpick inserted into the center of a muffin comes out clean.
8. Cool: Let the mini muffins cool in the tin for about 5 minutes before transferring them to a wire rack to cool completely.

Serve the Muffins

1. Top and Enjoy: Serve the mini muffins warm, with maple syrup and whipped cream on the side, or sprinkle a bit of powdered sugar over the top for extra sweetness. You can also add fresh fruit or a dollop of yogurt to complete the meal.