This was great! When I make it again I'm going to cut down the chocolate just a bit because the inside of the center was just pure chocolate. I can't say that's a bad thing for taste but it made it difficult to keep it all in a nice slice=) I used Ghiradelli 60% cacao chocolate chips in this and even with that strong of a chocolate it was super good...but definitely needed a tall glass of milk!
1 cup butter
1/2 cup sugar
2/3 cup brown sugar
1 teaspoon vanilla
2 cups flour,
plus 4 tablespoons flour
1/2 teaspoon salt
1 teaspoon cream of tartar
1 teaspoon baking soda
2 cups semi-sweet chocolate chips
Beat butter and sugars together.
Add eggs and vanilla.
Mix flour, salt, baking soda, and cream of tartar.
Add dry ingredients to the batter and mix until well blended.
Stir in chocolate chips.
Spread dough into a 15 1/2 inch round pan.
Bake for 20 minutes at 350 degrees