Butterscotch Cookies with tartar

4 cups all-purpose flour 1 teaspoon baking soda 1 teaspoon cream of tartar 1/2 teaspoon salt 1 cup butter 2 cups brown sugar 2 large eggs 1 teaspoon vanilla[...]

1/2 cup butter 2 cups brown sugar , lightly packed 2 eggs , beaten 1/2 teaspoon vanilla 3 cups all-purpose flour 1 teaspoon baking soda 1/2 teaspoon cream of[...]

2 tablespoons butter , softened 2 tablespoons shortening 1 cup packed brown sugar 1 egg 1 teaspoon vanilla extract 1 1/2 cups all purpose flour 3/4 teaspoon[...]

1 cup butter , softened 1 cup canola oil 1 cup brown sugar (I like to use dark) 1 cup confectioners' sugar 2 eggs 1 teaspoon vanilla extract 1 (3 1/2 ounce)[...]