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4.5 from 4 votes

Low-Carb Oat Fiber Cupcakes

These buttermilk cupcakes are perfect for coffee or tea with a friend. The buttermilk adds a nice unique flavor.
Course: Dessert
Cuisine: American
Keyword: low-carb, oat fiber
Servings: 12
Calories: 335kcal



Cream Cheese Frosting

  • 1 1/2 packages cream cheese
  • 1/2 cup butter
  • 1/2 cup Sweetener Blend (or Swerve)



  • Preheat oven to 400 F and place rack one up from the bottom
  • Add liners to your muffin tin.
  • Prepare the sweetener mix. (see below for recipe) The consistency should be somewhere between table sugar and icing sugar ... so that is easily mixes with no hard crystals.
  • Add all the dry ingredients (except sweetener) to a small bowl and mix well.
  • Add soft butter to medium bowl and mix in the sweetener mix. Beat (by hand or mixer) until creamy and soft. Add one egg at a time and beat until incorporated. Add the vanilla and then slowly add the buttermilk a bit at a time. Continue to beat until smooth and creamy.
  • Spoon 1/2 of the dry ingredients into the butter mixture and mix thoroughly, scraping the bowl as you go.
  • Add remaining dry ingredients and mix thoroughly. You will have a thick but fluffy batter.
  • Spoon the batter into your cupcake liners, or put batter into a large piping bag and pipe into the liners. Fill liners up to 3/4 full.
  • When you have filled all the cupcake holes, get rid of air pockets by lifing the pan a foot off the counter and dropping it.
  • Put the cupcakes in a 400 F oven for 2 minutes. This encourages them to rise high.
  • Then turn the heat down to 350 F for 20 minutes.
  • Test with a wooden skewer or knife to make sure the cupcakes are done all the way though.
    Let cool.


  • Beat softened cream cheese until it is smooth and creamy. If the cream cheese is hard, zap it in a microwave over for FIVE seconds. No more -- you don't want it to fry.
  • Add the softened butter and whip until the mixture is light and smooth.
  • Add the sweetener mix and beat until it almost doubles in size and looks fluffy.
  • Put icing into a piping bag and decorate your cupcakes.


Calories: 335kcal | Carbohydrates: 7g | Protein: 6g | Fat: 32g | Saturated Fat: 17g | Cholesterol: 114mg | Sodium: 418mg | Potassium: 138mg | Fiber: 3g | Sugar: 3g | Vitamin A: 935IU | Calcium: 102mg | Iron: 0.8mg