Gluten-Free Oatmeal Cake With Frosting

Oatmeal Cake
Gluten-free oatmeal cake with broiled penuche frosting

Stacy Spensley/Flickr CC By 2.0

Prep: 15 mins
Cook: 35 mins
Total: 50 mins
Servings: 12 servings
Nutrition Facts (per serving)
355 Calories
20g Fat
38g Carbs
7g Protein
Show Full Nutrition Label Hide Full Nutrition Label
Nutrition Facts
Servings: 12
Amount per serving
Calories 355
% Daily Value*
Total Fat 20g 26%
Saturated Fat 11g 53%
Cholesterol 72mg 24%
Sodium 302mg 13%
Total Carbohydrate 38g 14%
Dietary Fiber 2g 6%
Protein 7g
Calcium 66mg 5%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

Use certified gluten-free oatmeal to make this moist and delicious cake. Broiled Penuche frosting is a wonderful broiled brown sugar, pecan, and coconut glaze. Who can resist a buttery rich cake with a crunchy, toffee-like frosting?


  • For the Gluten-Free Oatmeal Cake:
  • 1 cup certified gluten-free oatmeal
  • 1 1/3 cup water (boiling)
  • 1/2 cup (1 stick) butter
  • 3/4 cup sugar
  • 3/4 cup dark brown sugar
  • 2 eggs
  • 1 1/3 cups all-purpose gluten-free flour mix (use your favorite blend)
  • 1 teaspoon baking soda
  • 1 teaspoon salt
  • 1 teaspoon cinnamon
  • 1 teaspoon vanilla
  • For the Penuche Frosting:
  • 1 1/2 cups dark brown sugar
  • 6 tablespoons butter
  • 1 teaspoon vanilla
  • 1/4 cup cream (or canned coconut milk)
  • 1/2 cup pecans (chopped)
  • 1/2 cup unsweetened shredded coconut flakes

Steps to Make It

  1. Gather the ingredients.

  2. Preheat oven to 325 F. Grease a 13 x 9-inch baking dish.

  3. Put oatmeal in a bowl and add boiling water. Stir to combine and let stand for 15 minutes.

  4. Combine 1/2 cup butter with sugars in a mixing bowl and beat on high until light and fluffy.

  5. Add eggs, oatmeal, gluten-free flour mix, baking soda, salt, cinnamon, and vanilla and beat on low, just until thoroughly blended.

  6. Pour cake batter in prepared baking dish.

  7. Bake for 35 to 40 minutes, or until a toothpick inserted in the middle of the cake comes out clean.

  8. While the cake is baking, combine penuche frosting mixture in a bowl.

  9. As soon as the cake comes out of the oven, spread the frosting mixture evenly over the top of the hot cake.

  10. Broil the cake, about 6-inches from the broiler, until the frosting is bubbling and golden brown- about 5 minutes. Watch this step carefully- the frosting will burn if left under the broiler too long!

  11. Cool before serving.

Glass Bakeware Warning

Do not use glass bakeware when broiling or when a recipe calls to add liquid to a hot pan, as glass may explode. Even if it states oven-safe or heat resistant, tempered glass products can, and do, break occasionally.


  • You can try using an all purpose gluten-free flour blend with nutritious amaranth, sorghum and quinoa flours for good results.
  • Always make sure your work surfaces, utensils, pans, and tools are free of gluten. Always read product labels. Manufacturers can change product formulations without notice. When in doubt, do not buy or use a product before contacting the manufacturer for verification that the product is free of gluten.