4.8 from 5 votes

Cooked Flour Buttercream (Ermine Frosting)

Prep Time
10 mins
Cook Time
1 hr
Total Time
1 hr 10 mins

Quick and easy cooked flour buttercream (Ermine frosting) recipe that's stable, smooth and creamy. Perfect for piping and decorating cakes and cupcakes.

Servings: 3 Cups
Course: Dessert
Cuisine: American
Calories: 1250 kcal
Author: CakeWhiz


  • 1 cup Milk Whole
  • 5 tbsp All-purpose flour
  • 1 cup Granulated sugar
  • 1/2 cup Butter Unsalted
  • 1/2 cup Shortening
  • 1 tbsp Vanilla extract Clear
  • 1-2 cups Powdered sugar Optional


  1. In a non-stick saucepan, add milk, flour, granulated sugar and cook on medium heat, while constantly whisking everything together. 

  2. When the flour mixture starts to thicken, remove from heat and pour it into a bowl.

  3. Cover the bowl with saran wrap quickly, making sure it's directly touching the surface to prevent any "skin" formation. 

  4. Place this bowl in the fridge and let it cool down completely until it has the consistency of a pudding. 

  5. In a mixing bowl, cream together butter and shortening. 

  6. Add the flour mixture and vanilla extract, while constantly mixing.

  7. Add powdered sugar (1/4 cup at a time) and continue mixing, until you have the desired consistency and flavor. This step is optional

  8. Use this frosting to pipe your cakes/cupcakes and enjoy!

Recipe Notes

Nutrition Facts
Cooked Flour Buttercream (Ermine Frosting)
Amount Per Serving
Calories 1250 Calories from Fat 603
% Daily Value*
Fat 67g103%
Saturated Fat 29g145%
Cholesterol 89mg30%
Sodium 309mg13%
Potassium 120mg3%
Carbohydrates 160g53%
Sugar 149g166%
Protein 4g8%
Vitamin A 1075IU22%
Calcium 101mg10%
Iron 0.6mg3%
* Percent Daily Values are based on a 2000 calorie diet.