INGREDIENTS
COOKIE BARS:
1 cup
butter
2 cups
granulated sugar
4
large eggs, at room temperature
1 tbsp
vanilla extract
2 tbsp
lemon zest (optional)
5 cups
all-purpose flour
1 tsp
salt
1/2 tsp
baking soda
FROSTING:
1 cup
butter
1 tsp
vanilla extract
salt
4 cups
powdered sugar, sifted
5 tbsp
milk
pink food coloring (optional)
sprinkles or rainbow nonpareils