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Iced Oatmeal Cookies

Iced oatmeal cookies are a classic, old-fashioned favorite. These cookies are tender and chewy with a sweet vanilla icing on top. The cookie dough is made with brown sugar, molasses, a hint of cinnamon, and vanilla for a super flavorful oatmeal cookie.
Prep Time30 minutes
Cook Time12 minutes
Total Time1 hour
Course: Dessert
Cuisine: American
Keyword: Iced Oatmeal Cookies
Servings: 40 cookies

Equipment

  • Cookie Sheets

Ingredients

Oatmeal Cookies

  • 2 ¼ cup all-purpose flour (281 grams)
  • 1 teaspoon baking soda
  • 1/2 teaspoon cinnamon
  • 1/2 teaspoon salt
  • 1 cup unsalted butter (226 grams) softened but not starting to melt
  • 1 cup brown sugar (210 grams)
  • 1 cup granulated sugar (200 grams)
  • 1 tablespoon molasses or honey
  • 2 teaspoons vanilla extract
  • 2 large eggs
  • cup quick oats (about 135 grams)
  • cup large rolled oats (about 135 grams)

Vanilla Icing

  • 2-2½ cup powdered sugar (220 - 275 grams) sifted
  • 2-2½ tablepsoons milk
  • ¼ teaspoon vanilla extract

Instructions

Oatmeal Cookies

  • Preheat the oven to 350℉ (180℃) and line cookie sheets with parchment paper or silicone baking mats.
  • In a medium bowl, whisk together the flour, cinnamon, baking soda and salt. Set aside.
  • In a large bowl, beat together the butter, brown sugar and granulated sugar until creamed.
  • Beat the molasses, vanilla and 2 eggs into the butter mixture.
  • Mix the dry ingredients into the butter mixture until smooth.
  • Mix the oats into the butter mixture until evenly combined.
  • Scoop the dough into balls with about 1½ tablespoons of dough each (I use a cookie scoop for this) and place 2 inches apart on the lined cookie sheets.
  • Bake 1 cookie sheet at a time in the middle of the preheated oven for about 10-12 minutes, or until the tops look just set.
  • Cool the cookies on the cookie sheet.

Icing

  • In a medium bowl, whisk together 2 cups powdered sugar, 1½ tablespoons milk and the vanilla. If the frosting seems too thin, whisk in a little extra powdered sugar. If it seems too thick, whisk in a little extra milk. It should be opaque in color, but still thin enough to drizzle.
  • Be sure that the cookies are 100% cool before icing. Dip the top of each cookie in the glaze and set on a cooling rack or back on the cookie tray for the icing to harden.

Notes

  1. Molasses: Molasses can also be substituted with honey.
  2. Quick Oats and Large Oats: I prefer using the combination of both quick oats and large rolled oats. If you only have 1 variety, you can use a total of 3 cups of quick oats or 3 cups of large rolled oats. Do not use steel cut oats.
  3. Storage: Store cookies in an airtight container for up to 5 days. Be sure that the icing has completely hardened before stacking. 
  4. Nutrition: Details provided are an estimate only based on 1 cookie with icing, assuming 40 uniform cookies and all the icing is used. 

Nutrition

Calories: 164kcal | Carbohydrates: 28g | Protein: 2g | Fat: 5g | Saturated Fat: 3g | Polyunsaturated Fat: 0.4g | Monounsaturated Fat: 1g | Trans Fat: 0.2g | Cholesterol: 22mg | Sodium: 63mg | Potassium: 50mg | Fiber: 1g | Sugar: 18g | Vitamin A: 155IU | Vitamin C: 0.001mg | Calcium: 13mg | Iron: 1mg