Preheat oven to 375 F.
Line baking sheets with parchment paper or silicone baking mat.
Melt butter in a pot.
Combine butter and sugar and mix.
Let cool a few mins.
Add egg, egg yolk, and vanilla.
Add flour, baking soda, and salt.
Fold in chips.
Drop with a medium ice cream scoop on sheet and bake approx 10 mins.