Go Back

Sourdough Oatmeal Lactation Cookies.

If you’re a mother, you know the breastfeeding hunger is REAL. This chewy Sourdough Oatmeal Lactation Cookie is packed with brown butter and brown sugar to give it that note of caramel, paired with sweet coconut and rich chocolate. Full of the nutrition you need to support lactation, and decadent enough to be the perfect late night pumping snack. From one mother to another- I hope you love this recipe!
5 from 3 votes
Prep Time 30 minutes
Cook Time 20 minutes
Servings 18

Equipment

  • Medium sized pot for browning butter
  • Large mixing bowl or stand mixer
  • Medium sized mixing bowl for dry ingredients
  • Electric mixer stand mixer or hand held
  • Spatula
  • Parchment paper or silicone mats
  • 3 Baking sheets
  • 2 ounce cookie scoop
  • Large circular cookie cutter or small bowl to shape cookies
  • Wire cooling rack

Ingredients
  

Wet Ingredients:

  • 1 cup (227g) unsalted butter
  • 1 cup (200g) packed brown sugar
  • 1/2 cup (120g) granulated white sugar
  • 1/2 cup (120g) sourdough starter discard
  • 2 large eggs room temperature
  • 2 teaspoons pure vanilla extract

Dry Ingredients:

  • 2 cups (275g) all-purpose flour
  • 2 cups (180g) old-fashioned rolled oats
  • 1 teaspoon (6g) fine sea salt
  • 3 Tablespoons (30g) Brewer's yeast
  • 2 Tablespoons (14g) ground flax meal
  • 1 teaspoon (5g) baking soda
  • 1 teaspoon (4g) baking powder
  • 1 1/2 teaspoons (4g) ground cinnamon

Mix In's:

  • 1 3/4 cups (275g) semi-sweet chocolate chips
  • 1/2 cup (60g) shredded sweetened coconut

Garnish:

  • Flaky sea salt for sprinkling

Instructions
 

Sourdough Oatmeal Lactation Cookies

    Brown The Butter:

    • n a medium saucepan, melt the butter over low heat. Continue cooking, stirring frequently, until the butter foams and turns a rich amber color with brown specks at the bottom, emitting a nutty aroma. Remove from heat immediately. This process typically takes about 5-7 minutes. I like to do this the night before.
      1 cup (227g) unsalted butter
    • Once butter is browned, remove the saucepan from heat and transfer the butter to a the stand mixer bowl to cool to and become solid again.

    Combine Wet Ingredients:

    • In a large mixing bowl, combine the cooled browned butter, brown sugar, and granulated white sugar. Using an electric mixer on medium speed, cream together for approximately 2 minutes until the mixture is light and fluffy. It'll be a bit crumbly, that's okay!
      1 cup (200g) packed brown sugar, 1/2 cup (120g) granulated white sugar
    • Add the eggs, sourdough discard, and vanilla extract to the bowl. Continue to mix on medium speed for another 2 minutes, ensuring all ingredients are well incorporated and fluffy. Remember to scrape down the sides of the bowl and mix everything at the bottom. This insures all your cookies come out evenly.
      1/2 cup (120g) sourdough starter discard, 2 large eggs, 2 teaspoons pure vanilla extract

    Incorporate Dry Ingredients:

    • In a separate bowl, mix together with a whisk the all-purpose flour, rolled oats, salt, Brewer's yeast, flax meal, baking soda, baking powder, and cinnamon (if using). This is important to make sure your ingredients are evenly distributed.
      2 cups (275g) all-purpose flour, 2 cups (180g) old-fashioned rolled oats, 1 teaspoon (6g) fine sea salt, 3 Tablespoons (30g) Brewer's yeast, 2 Tablespoons (14g) ground flax meal, 1 teaspoon (5g) baking soda, 1 teaspoon (4g) baking powder, 1 1/2 teaspoons (4g) ground cinnamon
    • Gradually add the dry ingredients to the wet mixture, mixing on low speed until just combined. Avoid overmixing to ensure a tender cookie texture.

    Add Chocolate Chips and Coconut

    • Fold in the semi-sweet chocolate chips and coconut, ensuring they are evenly distributed throughout the dough. You can add them to the mixer if using, and pulse them through the dough for ease.
      1 3/4 cups (275g) semi-sweet chocolate chips, 1/2 cup (60g) shredded sweetened coconut

    Chill the Dough:

    • Cover the mixing bowl with plastic wrap or a lid and refrigerate the dough for at least 2 hours. For optimal fermentation, consider chilling the dough overnight. If chilling overnight, allow the dough to rest at room temperature for about 1 hour before baking to make scooping easier and ensure the right consistency of your cookies.
    • Note about refrigerating dough: If you want to scoop and refrigerate dough as balls, I recommend chilling 1-2 hours then scooping. Gram weight for these cookies is roughly 60-70 grams. Refrigerate overnight and allow dough to sit on counter 1 hour before baking as listed below.
    • Note about freezing dough: If you choose to freeze the cookie dough, I recommend refrigerating the dough after mixing until it firms up (about 1-2 hours). Scoop your cookies and refrigerate overnight to achieve optimal fermentation. If you wish, you can skip this refrigeration step, but your dough won't ferment as long. After dough has refrigerated, transfer to airtight containers or zip locks with air removed and freeze. When ready to bake cookies, allow dough to sit out and thaw 2 hours and bake cookies as directed below.

    Bake the Cookies:

    • Preheat your oven to 350°F (175°C). Line baking sheets with parchment paper (or my preference) silicone mats.
    • Using a 2-ounce (approximately 2 tablespoons) cookie scoop, portion the dough onto the prepared baking sheets, spacing each cookie about 2 inches apart to allow for spreading. I scoop six to one cookie sheet.
    • Bake in the preheated oven for 15 minutes, or until the edges are golden brown and the centers appear slightly underbaked.
    • Immediately upon removing from the oven, slap the baking sheets on the countertop to achieve a crinkly appearance on the cookies. You may need to return cookies to the oven for an additional five minutes at this point if baking larger cookies, mine usually require another 4-6 minutes.
    • While the cookies are still warm, use a large circular cookie cutter larger than your cookie to perfect the edges and give your cookie a perfect shape and even thickness by placing the cookie cutter over the cookie and making a circle that will nudge any irregular edges into a perfect circle, if desired. I use the largest cookie cutter from this set linked here https://amzn.to/4k7NYlu.
    • Sprinkle each cookie with a pinch of Maldon flaky sea salt.
      Flaky sea salt

    Cool and Enjoy:

    • Allow the cookies to cool completely on the baking sheets to set before transferring them to a wire rack.
    • Once completely cooled, indulge in your homemade sourdough oatmeal lactation cookies!
    • Makes 18 large cookies (2 oz)

    Notes

    How to Store:
    Store in an airtight container on the counter for up to 7 days, or in airtight container in freezer for up to 4 months.
    Enjoy!
    Course Sourdough Cookies
    Cuisine Cookies and Bars