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Leftover Oatmeal Cookies

Leftover Oatmeal Cookies

  • Author: Joanie Simon
  • Total Time: 30 mins
  • Yield: 20 - 24 cookies 1x


Easy, light cookies made with leftover oatmeal, taking you from breakfast to snack time.


  • 2 cups flour
  • 2 tsp baking powder
  • 1/2 tsp cinnamon
  • 1/2 tsp salt
  • 1/2 cup butter
  • 1/2 cup brown sugar
  • 2 eggs
  • 1/2 tsp almond extract
  • 1 Tbs lemon juice
  • 1 cup prepared (leftover) oatmeal
  • 3/4 cup blueberries
  • 1/2 cup powdered sugar
  • 2 Tbs fresh lemon juice


  1. Preheat oven to 350F
  2. Combine flour, baking powder, cinnamon and salt in a large bowl, then set aside.
  3. Combine butter and brown sugar in another bowl and cream together with a hand mixer or stand mixer, then add in eggs, almond extract, and lemon juice and continue to mix until smooth.
  4. Add in oatmeal and continue to mix until smooth.
  5. Add the oatmeal mix to the flour until just combined (don’t overmix) and then fold in blueberries.
  6. Scoop a spoonful of the dough and form into a ball (don’t overpack) then place on a silpat on a cookie sheet and bake at 350F for 12 to 15 minutes until golden brown and risen.
  7. Transfer to a cooling rack.
  8. Once cool, combine the powdered sugar with the lemon juice, stirring until smooth. Drizzle lemon glaze over the cookies and allow to sit until the glaze firms up.
  9. Keep on a plate, covered with plastic for up to four days.
  • Prep Time: 15 mins
  • Cook Time: 15 mins
  • Category: Cookies
  • Cuisine: American