Cream together the icing sugar and butter until soft and well combined.
Stir through the custard powder and the flour. This should form a stiff ball of well combined dough, take care not to overwork the dough, only work it enough to bring it together.
Line a baking sheet with parchment paper or a silicone mat.
Take a teaspoon of the dough and roll it into a ball and place it on a baking sheet. Use a fork to gently press down the top of each ball of dough - don't press too hard.
Leave sufficient space between each ball to allow the biscuits to spread in the oven.
When done place the custard creams into an oven at 180C/160CFan/355F for 12-15 minutes. The biscuits are baked when just cooked and firm to touch.
Remove from the oven and place the biscuits on a wire rack to cool.
Meanwhile mix together the icing sugar and butter to make the butter icing.
Once the biscuits have cooled spread some butter icing between two biscuits and allow to the icing to set. Store the sandwiched biscuits in an air-tight container.
Notes
Take the butter out of the fridge 1 hour before you plan to bake, and allow the butter to soften. This will make it a lot easier to work with when creaming the butter and sugar together both for the biscuits and the buttercream filling.
Don't overwork the biscuit dough or you will end up with a tough biscuit. Mix it only to bring the dough together, then gently roll into balls ready for baking.
Don't press down too hard with the fork when making the biscuit shapes, just enough to press down a little as the biscuits will spread in the oven.
To make vegan custard creams swap the butter for a plant based butter in both the biscuits and the buttercream.
Nutrition Facts
Custard Creams
Amount Per Serving
Calories 478Calories from Fat 261
% Daily Value*
Fat 29g45%
Saturated Fat 18g113%
Trans Fat 1g
Polyunsaturated Fat 1g
Monounsaturated Fat 7g
Cholesterol 95mg32%
Sodium 245mg11%
Potassium 77mg2%
Carbohydrates 53g18%
Fiber 1g4%
Sugar 28g31%
Protein 4g8%
Vitamin A 875IU18%
Vitamin C 0.03mg0%
Calcium 31mg3%
Iron 0.4mg2%
* Percent Daily Values are based on a 2000 calorie diet.
• Please note that the nutrition information provided above is approximate and meant as a guideline only •