Heat oven to 375°F/190℃.
Line 2 sheet pans with parchment paper. Set aside.
With an electric mixer, beat butter and sugars until light and fluffy, about 2-3 minutes.
Mix in egg and egg yolk.
Stir in vanilla.
Add flour and baking soda.
Mix only to combine.
Stir in chocolate chips.
Use a 3 Tablespoon scoop to portion dough onto prepared pans.
Bake for 12 minutes, until lightly browned but still soft.
Allow to cool on sheet pans.
Turn 7 cookies upside down on sheet pan.
Place ½ cup ice cream on top of each upside down cookie.
Top with remaining 7 cookies.
Dip sides in chocolate chips.
Place in freezer to harden.