1 1/2 cups flour

3/4 cups dark brown sugar

1/2 cup softened butter

1/4 cup white sugar

2 1/2 tablespoons vanilla extract

1/2 teaspoon baking soda

1/4 teaspoon salt

1 egg

3/4 cups semisweet chocolate chips

3/4 cups white chocolate chips

Heat oven to 375 degrees.

Place all ingredients except the chocolate chips in a mixing bowl. Beat until blended. 

Alternately, place all ingredients except the flour and chocolate chips in the mixing bowl.  Beat and then add the flour a little at a time.

 

Stir in the chips.

 

Using an ice cream scoop, scoop into balls. 

Place on a cookie sheet and bake for 10 minutes.  

For the time, I have made these a bunch and they took 10 minutes to cook somewhere I lived. Now they tend to take somewhere between 12 and 20 minutes, depending on the size of the cookies, the number I am cooking at one time, and the cookie sheet. So just watch them after 10 minutes and you are looking for a light browning around the edges and for the cookie to mostly flatten out.

Cool and serve.