You could use a mixer for this but I just used a fork; the butter has to be soft. Cream butter and sugars. Add vanilla and Just Egg, mix until just blended. Mix flour, salt and baking soda separately, then stir into sugar mixture. When combined, stir in chocolate chips. Mixture should be smooth and almost caramel color. Spoon into large round mounds on a baking sheet, 1.5-2 inches apart. Freeze pan for about 5 minutes, while heating oven. Bake for 11 minutes. Lift off pan with a spatula immediately, carefully, and cool on racks or flat paper towels.