Classic Iced Oatmeal Cookies with Vanilla Glaze

The most delicious iced oatmeal cookies — a frosted oatmeal cookie perfect any time of year. These cookies are lightly updated by using part white whole wheat flour and a touch of coconut oil for a slightly nutty flavor.

The Perfect Frosted Oatmeal Cookies

Whether you bake them for a holiday cookie tray, an after-school snack, or a warm-weather gathering, iced oatmeal cookies are always a crowd-pleaser. These cookies balance chew and tenderness with a sweet, simple glaze that keeps every bite satisfying. They’re quick to make, slightly healthier than traditional recipes, and endlessly adaptable.

• Slightly chewy texture
• A lighter cookie option using white whole wheat and coconut oil
• Ready in about 30 minutes
• Buttery, sweet, and topped with a simple icing

Whole Ingredients

This recipe centers on rolled oats and a mix of flours to give the cookies hearty texture and reliable structure. Brown sugar and a hint of molasses provide depth and chewiness, while cinnamon adds warmth.

White whole wheat flour: Substituting half of the all-purpose flour for white whole wheat adds a mild nutty flavor and a pleasing texture without making the cookies dense.

Coconut oil: Replacing part of the butter with coconut oil contributes a subtle sweetness and nutty note. Use coconut oil at room temperature rather than melted.

Rolled oats (old-fashioned): The oats are pulsed a few times to break them down into a coarser texture that’s easier to chew; avoid using only oat flour or quick oats for best results.

Cinnamon: A small amount brightens the overall flavor and complements the brown sugar and molasses.

4 Iced Oatmeal Cookie Tips

1. Type of oats: Pulse old-fashioned rolled oats 6–8 times in a food processor so they’re coarser than oat flour. This preserves some texture while making the cookies easier to chew.
2. Scoop size: Use a 1.5-tablespoon cookie scoop for uniform cookies and consistent bake time. Smaller scoops will bake faster; larger scoops will need more time.
3. Flatten slightly: Roll each ball of dough between your palms and press down gently so the cookies spread and bake evenly.
4. Freezer-friendly: Let cookies cool completely, freeze on a baking sheet for an hour, then transfer to a freezer-safe bag. Remove excess air. Cookies keep up to 3 months frozen.

Easy Icing

The glaze is intentionally simple: powdered sugar plus a small amount of liquid. Start with 1 teaspoon of liquid at a time so the icing stays thick enough to hold its shape on the cookie.

Use about 1/3 cup powdered sugar with approximately 3 teaspoons of water for a thicker drizzle that won’t run off. For additional flavor, swap the water for a teaspoon or two of orange or lemon juice to complement the brown sugar and molasses.

Festive Topping Ideas

We like a little orange zest on top for contrast, but these cookies are great with many finishes. Try one of the following:

• Shaved chocolate
• Sprinkles for a festive look
• Extra raw oats for texture
• Chopped nuts for crunch
• Plain, with just the glaze
• A light sprinkle of sea salt to balance sweetness

Storage

Allow cookies to cool completely before storing. Place them in a single layer or with parchment between layers in an airtight container. Store at room temperature for 3–5 days for best texture.

Freezer Instructions

After baking and cooling, freeze the cookies on a tray for 15–60 minutes to set them so they won’t stick together. Move frozen cookies to a freezer-safe bag or container and store up to 3 months. Thaw at room temperature when ready to enjoy.

Iced Oatmeal Cookies — Recipe Details

Prep: 20 mins • Cook: 12 mins • Total: 32 mins • Servings: 16

Ingredients

Dry

• 1 cup rolled oats, lightly pulsed (coarser than oat flour)
• 3/4 cup white whole wheat flour
• 3/4 cup all-purpose flour
• 1/2 teaspoon baking soda
• 1/2 teaspoon baking powder
• 1 teaspoon ground cinnamon
• Pinch of salt

Wet

• 1/2 cup unsalted butter, room temperature
• 1/4 cup coconut oil, room temperature (not melted)
• 1 cup packed light brown sugar
• 1 large egg
• 2 teaspoons molasses
• 1 teaspoon vanilla extract

Icing

• 1/3 cup powdered sugar
• About 3 teaspoons water (or citrus juice for added flavor)

Instructions

1. Preheat the oven to 350°F (175°C). Line or spray a baking sheet with nonstick spray.
2. Place 1 cup rolled oats in a food processor and pulse 6–8 times until coarser than oat flour. Transfer the oats to a medium bowl.
3. Whisk in the flours, baking soda, baking powder, cinnamon, and a pinch of salt. Set dry mixture aside.
4. In a large bowl, beat the butter, coconut oil, and brown sugar with a hand or stand mixer until creamy, 2–3 minutes.
5. Add the egg, molasses, and vanilla and mix on medium until smooth.
6. Add the dry ingredients gradually, about 1/2 cup at a time, mixing until just combined.
7. Use a 1.5-tablespoon scoop to portion dough, roll between palms, and flatten slightly. Place cookies on the prepared baking sheet.
8. Bake at 350°F for about 12 minutes, until set. Remove from the oven and transfer cookies to a cooling rack immediately.
9. Let cookies cool 10–15 minutes. Meanwhile, whisk powdered sugar with liquid, adding a teaspoon at a time until the icing reaches a thick drizzle consistency.
10. Drizzle or spread icing over cooled cookies and finish with orange zest, chocolate shavings, nuts, or a pinch of sea salt if desired.

Nutrition (approximate per cookie)

Calories: 202 kcal • Carbohydrates: 26 g • Protein: 2 g • Fat: 10 g • Fiber: 1 g • Sugar: 15 g

If you try these iced oatmeal cookies, they’re perfect for gifting, lunchboxes, or coffee breaks—simple to make and easy to customize. Enjoy!