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pieces of oatmeal cake on plates

Easy & Hearty Oatmeal Cake Recipe

This easy oatmeal cake recipe is moist, hearty, and uses basic ingredients found right in your pantry. The perfect cake for an afternoon snack!
Course Dessert
Cuisine American
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings 9 pieces


  • 1 cup uncooked oats (quick or old fashioned)
  • 1 cup boiling water
  • 1 cup brown sugar
  • 1/2 cup butter softened
  • 2 eggs
  • 1 teaspoon pure vanilla extract
  • 1 1/2 cup Flour
  • 1 teaspoon baking soda
  • 1 1/2 teaspoon baking powder
  • 1/2 teaspoon Cinnamon
  • 1/2 teaspoon salt (use 1/4 teaspoon if using salted butter)
  • powdered sugar for dusting


  • Preheat oven to 350 degrees F.
  • Place the oatmeal in a medium bowl and add the boiling water.
  • Stir and let cool.
  • In a large mixing bowl, combine the brown sugar, butter, eggs, and vanilla. Mix until well combined and fluffy.
  • Add flour, baking powder, baking soda, cinnamon, and salt.
  • Mix well, making sure to scrape the bottom and sides of bowl.
  • Add oat mixture and mix until combined.
  • Pour into 8 x 8 inch prepared pan.
  • Bake 25 - 30 minutes until knife inserted in the middle comes out clean. Do not overbake.
  • Cool. Sprinkle with powdered sugar.


I use Baker's Joy to prepare my pans.