Preheat your oven to 350°F (175°C) and line a muffin tin with paper liners.

In a large bowl, whisk together the flour, sugar, baking powder, and salt.

In another bowl, combine the eggs, milk, vegetable oil, and vanilla extract. Mix well.

Pour the wet ingredients into the dry ingredients and stir until just combined. Be careful not to overmix.

Fold in the chocolate chips and sprinkles, along with any additional mix-ins you prefer.

Divide the batter evenly among the muffin cups, filling each about 2/3 full.

Bake in the preheated oven for 20-25 minutes, or until a toothpick inserted in the center comes out clean.

Allow the muffins to cool in the pan for 5 minutes before transferring them to a wire rack to cool completely