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Iced Oatmeal Cookies – Crumbl Copycat

Soft oatmeal cookies topped with a glossy, sweet icing, perfect for cozy evenings and family gatherings.
Prep Time 20 minutes
Cook Time 12 minutes
Total Time 1 hour
Course Dessert, Snack
Cuisine American
Servings 24 cookies
Calories 150 kcal

Ingredients
  

Dry Ingredients

  • 1 1/4 cups all-purpose flour Swap half for whole-wheat pastry flour for a nuttier note.
  • 1 teaspoon baking soda Helps the cookies spread just enough.
  • 1 teaspoon ground cinnamon Adds warmth and cozy aroma.
  • 1/2 teaspoon salt Balances the sweetness.

Wet Ingredients

  • 1/2 cup unsalted butter, softened For a dairy-free option, use vegan butter.
  • 1/2 cup brown sugar Light or dark both work.
  • 1/4 cup granulated sugar For crisp edges and balance.
  • 1 large egg Use flax eggs as a vegan substitute.
  • 1 teaspoon vanilla extract Fragrant and essential.

Main Ingredients

  • 1 1/2 cups rolled oats Quick oats can be used in a pinch but change the texture slightly.
  • 1/2 cup raisins or chocolate chips Optional mix-ins; try chopped toasted pecans for crunch.

Icing

  • 1 to 1 1/2 cups powdered sugar Adjust thickness with more or less milk.
  • 2 to 3 tablespoons milk or plant milk
  • 1/2 teaspoon vanilla extract
  • a pinch salt

Instructions
 

Preparation

  • Preheat the oven to 350°F (175°C) and line baking sheets with parchment paper.
  • In a medium bowl, whisk together the flour, baking soda, cinnamon, and salt.
  • In a large bowl, cream the butter, brown sugar, and granulated sugar until light and fluffy.
  • Beat in the egg and vanilla extract until glossy.
  • Gradually mix the dry ingredients into the butter mixture, then fold in the rolled oats and raisins or chocolate chips, if using.

Baking

  • Scoop tablespoon-sized portions onto the prepared sheets, spacing them about 2 inches apart.
  • For thicker cookies, chill the scoops for 15–30 minutes before baking.
  • Bake for 10–12 minutes until the edges are lightly golden and the centers look set but soft.
  • Cool on the baking sheet for 5 minutes, then transfer to a wire rack.

Icing

  • While still warm, prepare the icing: whisk together the powdered sugar, milk, and vanilla until smooth.
  • Spoon or drizzle the icing over cooled cookies and let it set for about 20 minutes before serving.

Notes

For healthier options, replace half the butter with mashed banana or applesauce and reduce sugar slightly. Use coconut oil instead of butter for dairy-free cookies.
Keyword Baking, cookies, Crumbl Copycat, Dessert Recipe, Iced Oatmeal Cookies