Oatmeal. Even in cookies it will boost your supply. Here is a recipe that is a blessing to the milk supply! It has oatmeal and brewers yeast(which also boosts supply).
Oatmeal Chocolate Chip Lactation Cookies by Noel Trujillo
1 cup butter
1 cup sugar
1 cup firmly packed brown sugar
4 tablespoons water
2 tablespoons flax seed meal
1 teaspoon vanilla
2 cups flour
1 teaspoon baking soda
1 teaspoon salt
3 cups oats
1 cup chocolate chips
2-4 tablespoons brewer's yeast
Preheat oven to 350°.
Mix the flaxseed meal and water and let sit for 3-5 minutes.
Beat butter, sugar, and brown sugar well.
Add eggs and mix well.
Add flaxseed mix and vanilla, beat well.
Sift together flour, brewers yeast, baking soda, and salt.
Add dry ingredients to butter mix.
Stir in oats and chips.
Scoop onto baking sheet.
Bake for 12 minutes.
Let set for a couple minutes then remove from tray.