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How To Make Healthy Oatmeal Snack Cake

Updated on September 8, 2012

Healthy Oat Snack Cake with Oat Groats

This cake really did not appeal to me when I first read about it but after I made this one time, I was sold on it.This is a great healthy recipe for an oat snack cake made with oat flour and oat groats so you get the double benefits of oats - plus buttermilk - and I added one other ingredient that I just thought would make it even better and it did!

Also good in this recipe is adding dried cranberries, raisins, or any kind of nuts or dried fruit that strikes your fancy.


This snack cake is made with steel cut oats rather than rolled oats. Steel cut oats are not processed to the extent that rolled oats are (whether they are quick cooking or regular). Rolled oats are steamed, rolled, re-steamed and toasted while steel cut oats do not go through all this processing and thus retain their flavor and their natural texture.

Steel cut oats are also low in calories and have no calories from fat. They have no sodium and are low in carbs. They are high in B vitamins, calcium, protein and fiber. Steel cut oats are also low in total and saturated fat and cholesterol. We know from studies that this can help reduce the risk of some cancers and heart disease. Steel cut oats are also reported to reduce the risk of adult onset diabetes. Lastly, steel cut oats are high in dietary fiber, which is also helpful in fighting heart disease. Fiber also helps prevent diabetes and lowers the risk of diverticular disease of the colon.

All in all, this is a delicious little snack cake made healthier by the use of oat flour. It is made with buttermilk (the oats soak overnight in it) and then I added nuts for extra snap and dusted it with a tiny bit of powdered sugar but the cake was perfectly fine just as it was!

Public Domain photo
Public Domain photo

Steel Cut Oat and Buttermilk Snack Cake


  • 1-1/2 cups buttermilk (I use low fat)
  • 1/2 cup steel cut oats (purchase in health food section or cereal section)
  • 1/2 cup oat flour (see how to make your own below if you don't have oat flour)
  • 1 cup flour
  • 1 teaspoon baking powder
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt (or less)
  • 2/3 cup packed brown sugar
  • 1/4 cup butter or margarine softened
  • 1-1/2 teaspoons vanilla
  • 1 large egg (or 1/4 cup egg substitute)
  • 1/4 cup chopped walnuts (optional)
  • 1/4 cup chopped dried cranberries
  • Cooking spray
  • Sprinkle of powdered sugar (optional)


  1. Stir together the steel cut oats and buttermilk. Cover and refrigerate for 8 hours.
  2. Spray a 13 x 9 pan or glass baking dish lightly with cooking spray.
  3. Preheat oven to 375 degrees.
  4. Spoon oat flour and regular flour into cups to measure. Combine the flours, baking powder, baking soda, and salt. Whisk together in the bowl. Set aside.
  5. Beat the sugar and butter in a large bowl with a mixer until light and fluffy.
  6. Add vanilla and egg. Beat until well mixed.
  7. Stir in the oat and buttermilk soaked mixture. Beat until well blended.
  8. Add in the flour mixture and beat just until moistened.
  9. If using walnuts or cranberries or a combination of both, add here and stir to combine.
  10. Pour the batter into the prepared pan.
  11. Bake at 375 degrees for 30 minutes - test with wooden pick or cake tester inserted in center. When tester or pick comes out clean, remove from oven and place on wire rack.
  12. Cool for 10 minutes. Cut into squares. (I flipped mine over on a cookie sheet and then flipped back to the rack)
  13. Dust with confectioner's sugar is desired.

How to Make Your Own Oat Flour

You will need:

  1. Rolled oats
  2. Blender or food processor

That's it!  You simply measure about 1/2 cup of rolled oats into the blender or the food processor and continue processing until it has the texture of flour.

You now have oat flour!  Re-measure to make sure you have the exact amount required in the recipe as it might be a bit more after grinding. 

Use this in any recipe that calls for oat flour.  It works great in breads as well.

The Scoop on Oats


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    • remaniki profile image

      Rema T V 

      5 years ago from Chennai, India

      A novel recipe that is so healthy! Oats is my favorite for breakfast when I have it cooked with milk and take it with diced fruits. This cake is on the top of my 'to be baked' recipes now. Thanks akirchner for a lovely new recipe. Voting up and awesome. Sharing it across. Cheers, Rema.

    • hotwebideas profile image

      Bruce Chamoff 

      6 years ago from New York

      Nice hub and voted up. I need to research my new love for steel cut oats and this hub was written well.

    • akirchner profile imageAUTHOR

      Audrey Kirchner 

      6 years ago from Washington

      Thanks PPR - glad you liked~

    • profile image

      Protein powder recipes 

      6 years ago

      that's really great, I love healthy protein rich recipes, and oats sure are a vital ingredient in a lot of those.

    • akirchner profile imageAUTHOR

      Audrey Kirchner 

      8 years ago from Washington

      Definitely - I kept going by this weekend and grabbing a piece with my cup of coffee - I had to check to make sure they were still 'fresh' - ha~! Our friends loved them though so this recipe replaced my 'old' recipe which was good too.

    • BkCreative profile image


      8 years ago from Brooklyn, New York City

      Wow! One of these and a cup of tea - and all is right with the world. I'll bookmark this! Thanks a million!

    • akirchner profile imageAUTHOR

      Audrey Kirchner 

      8 years ago from Washington

      This recipe actually moved up to my top for oat snack cake because it was SO good - and it was cool because it had some density to it/more texture because of the steel cut version. I've made bread before with steel cut oats but not the snack cake....anyhow - hope you like it!

    • rkhyclak profile image


      8 years ago from Ohio

      This sounds great! I can't wait to try it!


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