Creating Buttery Chocolate Chip Muffins is straightforward when following these simple steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C) and line a muffin tin with paper liners or grease it lightly.
2. Mix Dry Ingredients: In a medium bowl, whisk together the flour, baking powder, and salt until well combined.
3. Combine Wet Ingredients: In a large bowl, mix the melted butter and granulated sugar until smooth. Add the eggs, milk, and vanilla extract, mixing until fully incorporated.
4. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, stirring until just combined. Be careful not to overmix; a few lumps are okay.
5. Add Chocolate Chips: Fold in the semi-sweet chocolate chips and optional nuts until evenly distributed.
6. Fill Muffin Tins: Spoon the batter into the prepared muffin tin, filling each cup about 2/3 full.
7. Bake: Place the muffin tin in the preheated oven and bake for 20-25 minutes or until a toothpick inserted in the center comes out clean.
8. Cool: Once baked, remove the muffins from the oven and let them cool in the tin for about 10 minutes. Then transfer them to a wire rack to cool completely.

Following these steps will lead you to delicious, fluffy muffins that everyone will love!