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4.68 from 75 votes

Oatmeal Walnut Cookies

These oatmeal walnut cookies are crunchy and tasty, with a hint of cinnamon that makes them irresistible!
Prep Time10 mins
Cook Time15 mins
Total Time25 mins
Course: Cookies
Cuisine: American
Servings: 30
Calories: 88kcal


  • 1 stick unsalted butter room temperature
  • cup brown sugar
  • ¼ cup white sugar
  • 1 egg room temperature
  • 1 ⅔ cup old fashioned oatmeal
  • ½ cup all purpose flour
  • ½ teaspoon cinnamon
  • ½ teaspoon baking powder
  • cup chopped walnut


  • Cream the butter and sugar in a bowl using an electric mixer.
  • Add the egg and mix well.
  • Add the old fashioned oatmeal, flour, cinnamon and baking powder. Mix well using a wooden spoon.
  • Add the chopped walnut and mix again.
  • Let the dough chill in the fridge for 2 hours.
  • Preheat the oven to 350°F. Line a baking sheet with parchment paper.
  • Using a spoon or ice cream scoop, form balls of cookie dough and place them 2 inch apart on the baking sheet.
  • Bake for 13-15 minutes until the bottoms of the cookies start to brown.


  • Make sure to refrigerate the cookie dough for at least 2 hours up to 3 days. 
  • Store the cookies in an airtight container and keep in a cool and dry place up to 3 days. 
  • To freeze the baked cookies, place them in a freezer bag and freeze for up to 3 months. Thaw at room temperature or in the oven at 220 degrees F for 10 to 20 minutes. 
  • To freeze the cookie dough, transfer it to a freezer bag and freeze for up to 3 months. To bake the cookies, thaw the dough in the fridge overnight, then proceed with the baking instructions. 


Calories: 88kcal | Carbohydrates: 10g | Protein: 1g | Fat: 5g | Saturated Fat: 2g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Trans Fat: 1g | Cholesterol: 14mg | Sodium: 5mg | Potassium: 39mg | Fiber: 1g | Sugar: 7g | Vitamin A: 103IU | Vitamin C: 1mg | Calcium: 13mg | Iron: 1mg