1/2 cup butter, melted
1 cup light brown sugar
1/4 cup white sugar
2 tsp vanilla extract
1 egg + 1 yolk, room temperature
1/2 cup creamy peanut butter
1 1/4 cup all-purpose flour
1/2 tsp baking soda
1/2 tsp salt
2 cups semi sweet chocolate chunks
STEPS:
Melt butter, cool, and combine with white and brown sugars.
Add vanilla extract, eggs, and peanut butter. Combine.
Sift in flour, baking soda, and salt.
Add chocolate chunks.
Chill in the fridge for at least an hour (preferred).
Preheat oven to 350F. Using about 2tbsp dough per cookie, form smooth rounded balls. Press additional chocolate chunks into the tops before baking.
Bake for 15 minutes. Remove from oven, tap repeatedly on counter to make cookies sink as much as possible, and bake for another 2-ish minutes. Edges should be set and centers should appear underdone.