Preheat oven to 425°F
In a medium bowl, mix together the flour, baking soda, baking powder, and 1 cup of chocolate chips.
In a large bowl or the bowl of a stand mixer, combine the melted butter, eggs, vanilla, maple syrup, and buttermilk. Ensure all wet ingredients are at room temperature for the best results.
Gradually add the dry ingredients to the wet ingredients, mixing on low speed if using a stand mixer, or gently folding with a spatula if using regular mixing bowls, until just combined. Do not overmix to avoid dense muffins.
Portion the muffin batter into a muffin pan lined with paper or silicone muffin cups, or into a greased muffin pan, using a measuring cup. Divide the batter evenly among the cups. Sprinkle extra chocolate chips on top if desired.
When the oven temperature reaches 425°F, bake the muffins for 5 minutes. Then, reduce the heat to 375°F and bake for an additional 10-15 minutes.
Check the readiness of the muffins by poking them with a toothpick. If it comes out clean, the muffins are done. Be mindful not to overbake, as this will leave you with dry, crumbly muffins.