Gluten Free Oatmeal Skillet Cookie

This gluten free oatmeal skillet cookie is moist and delicious! Baked in a giant cookie in a cast-iron skillet for easier cleanup! We topped this delicious cast-iron cookie recipe with vanilla ice cream and caramel sauce. It is so hard to resist!!

Today is all about this incredible giant gluten free oatmeal cookie. Some call these big cookies a "pizookie" because they resemble a pizza. Any way you call it, my kids go crazy over this gluten free pizookie recipe!

The bigger, the better!! Just look at this Gluten Free Pumpkin Skillet Cookie.

I have been experimenting with baking in my cast iron skillet lately. I love how easy it is to bake with this skillet. It retains heat beautifully, making your baking turn out even. I had a cast-iron skillet for a long time that sat neglected under my stove for years.

If you love cookies, you will want to try all my delicious gluten free cookies recipes on the blog! And...if you love big cookies, wait until you try this incredible Gluten Free Skillet Cookie recipe!

Why This Recipe Is Great:

1. This gluten free skillet cookie is so easy to make.
2. All you need are a few simple ingredients like certified gluten free oats, brown sugar, butter, gluten free flour, chocolate chips or raisins, an egg, vanilla, and cinnamon.
3. This giant oatmeal cookie can also double as a big birthday cookie cake!

See my Gluten Free Cookie Troubleshooting Guide and my favorite Cookie Baking Tools for more tips.

If you are an ala mode person like me, you are going to want a gooey sweet sauce to drizzle over your gluten free oatmeal pizookie cookie. Here are some fun ideas for sauces:

Top Pick

Quaker Gluten Free Old Fashioned Rolled Oats, 24 oz Resealable Bags (Pack of 4)

There are a few brands of certified gluten free oats, and they are all good. I mostly buy this because you get four bags for a lower price.

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Ingredient Notes:

• Gluten Free Oats - Use rolled oats, not quick oats. Be sure your oats are certified gluten free!
• Gluten Free Flour Blend - Most brands of gluten free flour will work in this recipe but don't use any gluten free flour blend with bean flour. You can use my DIY Gluten Free Flour Blend if you need a gum-free blend.
• Brown Sugar - light or dark brown sugar both work well.
• Butter - Use unsalted butter. Use vegan butter if you are dairy-free.
• Eggs - Use size large.
• Vanilla Extract - I recommend using pure vanilla extract.

Certified Gluten Free Oats Are Critical:

I can't stress enough how important it is to use certified gluten free oats. Regular oats are very easily cross-contaminated with gluten every step of the way, from growing in the fields to harvesting equipment to silo storage.

Certified gluten free oats are grown with a purity protocol to ensure they do not get exposed to gluten.

Topping Ideas:

• Dolce Leche sauce (I buy it at Trader Joe's)
• Hot Fudge
• Bourbon Butterscotch Sauce (see the picture below!)
• Old-Fashioned Vanilla Cream Sauce

Tips For Success:

• Let the batter sit in the skillet for 15 minutes before baking. This will help soften the rolled oats.
• Be careful not to overbake this cookie.
• Use gluten free frosting to pipe decorations for a birthday.

Top Pick

Lodge L8SK3 10-¼-Inch Pre-Seasoned Skillet

This is the 10-inch cast iron skillet that I own. It is perfect for cooking dinner and dessert! It can easily go from the stove to the oven.

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Recipe Step-By-Step Directions:

It is so easy to learn how to make a skillet cookie! Not only are cookie skillets easy to make but they can also be used for birthdays and celebrations!

Step 1: Add all dry ingredients to a large mixing bowl. Use a whisk to blend thoroughly. Make sure your whole rolled oats are certified gluten free!

Step 2: In a separate bowl, add all of the wet ingredients and whisk to blend.

Step 3: Add chocolate chips or raisins. Pour the wet ingredients into the dry ingredients and mix well.

Step 4: Pour the cookie dough into a greased cast-iron skillet. I like to use coconut oil to grease the skillet. Spread the batter out so that it is evenly disbursed, and bake the skillet cookie for 18-20 minutes at 350º F.

Because you are baking this cookie dough as a giant cookie, you will need to bake this cookie longer than small cookies. If you don't have a cookie sheet or an 8x8 baking pan, this recipe is for you!

Recipe FAQ:

Storage:

Store this oatmeal skillet cookie in an airtight container in the refrigerator. It will keep fresh for up to 4 days. You can also cut it and freeze it in zip-style freezer bags.

More Gluten Free Cookie Recipes:

This delicious bourbon butterscotch sauce also tastes amazing on this Gluten Free Blond Brownie!

• If you can't decide between a brownie or a cookie, these Gluten Free Brookies are a great compromise cookie.
• These Gluten Free Sugar Cookies are made drop style and are quick and easy to make.
• If you love a melt-in-your-mouth cookie, these Gluten Free Russian Tea Cookies are one of my favorites.
• Who can say no to these Gluten Free Nutella Linzer Cookies? Nutella is so good in them.
• My regular gluten-free oatmeal raisin cookies recipe also makes the best Gluten Free Oatmeal Cream Pies.

📖 Recipe

Gluten Free Pizookie Cookie

Sandi Gaertner

Easy gluten free oatmeal cookie recipe baked in a cast iron skillet

5 from 6 votes

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Prep Time 10 minutes mins

Cook Time 22 minutes mins

Total Time 32 minutes mins

Course Gluten Free Dessert Recipes

Cuisine American

Servings 12 slices

Calories 125 kcal

Ingredients

  

1x2x3x

• ▢ ½ cup butter, unsalted * see note
• ▢ ¾ cup brown sugar or coconut sugar
• ▢ 2 large eggs
• ▢ 1 teaspoon vanilla
• ▢ 1 ¼ cup gluten free flour blend * see note
• ▢ ¾ cup gluten free whole oats * see note
• ▢ ½ teaspoon cinnamon

Instructions

 

• Preheat the oven to 350º F.
• Grease a cast iron skillet
• In a mixer, add wet ingredients and mix on low.
• Gradually add the dry ingredients.
• Pour the batter into the cast iron skillet.
• Bake for 20 minutes.
• Top with ice cream and bourbon butterscotch sauce.

Notes

1. I have tested this recipe with King Arthur Measure for Measure GF, Bob's Red Mill 1 to 1 GF blend, and Authentic Foods Multi Blend. That doesn't mean others will not work, I just have not tested other flours.
2. If your gluten free flour blend doesn’t contain Xanthan Gum or Guar Gum, please add 1 teaspoon.
3. To make this recipe dairy-free, substitute the butter for vegan butter.
4. It is critical to use certified gluten free oats if you are Celiac. Cross-contamination runs high in regular oats.
5. This cookie will keep up to 4 days in an air-tight container, or up to 4 months in the freezer.

SPECIAL NOTE

Please know that every gluten free flour blend has a different starch to grain ratio. If you use a blend I didn't test, you may need to adjust your moisture levels in your baked goods.

Nutrition

Serving: 1gCalories: 125kcalCarbohydrates: 26gProtein: 3gFat: 2gSaturated Fat: 1gTrans Fat: 1gCholesterol: 27mgSodium: 15mgPotassium: 48mgFiber: 2gSugar: 14gVitamin A: 40IUVitamin C: 1mgCalcium: 27mgIron: 1mg

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Nutrition Disclaimer

Nutritional information is an estimate provided to you as a courtesy. You should calculate the actual nutritional information with the products and brands you are using with your preferred nutritional calculator.

(*Note, this post was updated from an older 2016 post with new photos.)