'Hubba-Hubba' Brownie Chocolate Chip Marshmallow Cookies! (2 ways - Stuffed or Topped)

INGREDIENTS

Eggs, large

1 cup

60% bittersweet dark chocolate chips, bittersweet

1 2/3 cups

All-purpose flour

1/2 tsp

Baking powder

1 cup

Chocolate chips, semisweet

1 1/2 cups

Granulated sugar

1/2 tsp

Salt

1 cup

Semi-sweet chocolate chips

1/2 cup

Semi-sweet chocolate chips, mini

1 tsp

Vanilla extract

1/2 cup

Butter

I used jumbo marshmallows, jumbo