Preheat oveen to 350℉. Line sheet pan (or two if baking entire recipe) with parchment paper. Melt butter in microwave in 30 second increments, or in a pan on low heat on the stove.
In a medium bowl, whisk together flour, baking powder, baking soda, and salt. In the bowl of a stand mixer or a large bowl with a hand mixer, combine granulated and brown sugars.
Pour melted butter over sugar and beat until just combined. Add egg and vanilla and mix. Use a rubber spatula to scrape down the bottom and sides of the bowl. Add in dry ingredients and beat on low until just combined. Mix in chocolate chips on low or by hand with a spatula.
Using a 3 tablespoon cooking dough scoop, portion dough into balls for baking or freezing. Cook for 10 minutes, until outsides are set and insides are still gooey, and let cool for 20 minutes before serving. For frozen dough, bake for 12-15 minutes at 350℉.