These cookies are baked in a mini muffin pan and the chocolate chips inside are like little bits of treasure. These are fun for a party as an alternative to the traditional chocolate chip cookie
Melt butter. In a bowl, cream melted butter with both sugars. When light and fluffy, beat in the first egg then the second yolk and vanilla. Beat until creamy.
3/4 cup unsalted butter, 1 cup brown sugar, 1/2 cup sugar, 1 egg, 1 egg yolk, 1 tablespoon vanilla
Add baking soda and salt and mix until thoroughly combined. Add flour and stir until just combined.
Using a small cookie scoop, scoop dough into each hole of a mini muffin tin.
Set a little flour in a dish, and use a wooden tart tamper to push the balls of dough into the round molds you need to form the base of the treasure box. You want the dough to just come up to the edge of the mini muffin pan, no higher. Between each tamping, dip the tool into the flour and shake off excess. This will keep the dough from sticking to your tool.
Fill cookies with chocolate chips. Don't be afraid to put too many in, as the chocolate will melt and the cookies can hold plenty of chips.
2 cups chocolate chips
Get a small amount, just over a teaspoon or so, of the dough and flatten it in your hand for the lid of your treasure box. Place over the rest of the cookie and press down gently to lightly seal.
Place cookies into 325 degree oven and bake 15-18 minutes, until the tops are cracked and lightly golden.
Let cool in the pan for at least 10 minutes before removing them. Cool the rest of the way on a cooling rack.