3 Ingredients make the perfect easy buttercream recipe - with the main ingredients being butter and sweetened condensed milk, providing a super smooth and easily pipable homemade frosting.
Add butter to a heavy-duty mixer fitted with the whisk attachment. Beat on high for 6 minutes, stopping the mixer and scraping down the bowl every 2 minutes.
Butter will lighten until it’s nearly white or a pale yellow and be light and fluffy.
Add one can of sweetened condensed milk in 3-4 parts, beating well after each addition. Start by adding a small amount and incorporating, a little more and incorporating, etc., until the full can is done. This allows the butter and sweetened condensed milk to combine slowly. If you dump the whole thing at once, it will have difficulty coming together.
Continue to beat 2 minutes after the entire can has been added.
Add in 1 tsp of vanilla extra and mix together. The homemade frosting should be a smooth texture.
If your consistency is too runny, add powdered sugar to the mixture and combine. Continue adding powdered sugar (confectioners sugar), a bit at a time, till desired consistency.
Place Russian Buttercream into a pastry bag fitted with a tip and pipe it onto cupcakes. Frosting must be used and eaten fairly quickly or stored in the fridge.
Notes
Softening butter - It’s best to remove butter from the fridge, unwrap, and leave it on the counter for at least an hour before starting the recipe. Remember that conditions in your home can affect this; if you are already baking, the butter could melt.