How to cover / frost a cake with buttercream and get smooth sides

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~ Please note that this post may contain affiliate links~

If you’re new to cake decorating or maybe looking to advance to larger cakes from cupcakes buttercream is a great option as a covering for your cakes, whether you are looking to decorate directly onto the buttercream or use this as a base underneath fondant / sugarpaste. This week I thought I would create a tutorial to show you exactly how I cover my cakes in buttercream. Now there are different methods that people like to use to get smooth sides and sharp edges but this is the technique I use and that has always worked for me.

To watch the full tutorial just head to the video at the bottom of this post.

How to cover a cake in buttercream

The Buttercream

My buttercream of choice is usually American Buttercream as this is easy to make and I really love the sweetness of the taste. Plus you only need butter, icing sugar (or confectioners sugar as is also known), your flavouring and I like to add a few table spoons of milk, then just whisk it up into a fluffy consistency ready to add to your cake. You will find my buttercream recipe here!

Covering a cake in buttercream

Tips for getting smooth buttercream sides

When covering my cakes there are a few steps that I always stick to and these are also the same if I’m using ganache. The biggest tip I can give you is to start with level layers of cake. This makes it so much easier to get a nice stable cake with straight sides. I also cover my cake in 2 layers of buttercream.

The first layer being a crumb coat. The crumb coat is important as it locks in any loose crumbs you might have on your cake and it also gives you a nice smooth base for adding your final layer of buttercream. Once I have applied the crumb coat, which usually resembles a semi naked cake, I pop this into the fridge for around 15 – 20 minutes for that buttercream to firm up. I then apply a thicker outer layer of buttercream and set about making the finish as smooth as I can.

Frosting a cake with buttercream

If you are finding it a little tricky to smooth the sides, especially if your buttercream is a little stiff you can always heat up your smoothing tool. Now this only works if you are using a metal smoother, but by running it under a hot tap or popping the long edge in some boiling water, when you run the smoother over the side of the cake it just slightly melts the surface of the buttercream helping to get out any imperfections. Just make sure you wipe off any excess water before placing it against your cake.

Getting rid of air bubbles in your buttercream

If you find when covering your cakes with buttercream you end up with a lot of bubbles on the surface my biggest tip would be, after mixing up your batch of buttercream, use a spatula and push your buttercream around the end of your bowl. This will push out any bubbles and give you a much smoother buttercream. You also might want to do this if your buttercream has been left to sit, as air bubbles will start to develop.

Video Tutorial

Below is the full tutorial where I run through in more detail how I prepare my cake, fill my layers and add my buttercream to the side. I really hope you will find this tutorial useful.

Also don’t forget if you haven’t already you can subscribe to my YouTube channel for more Free cake decorating video tutorials, including how I cover my cakes in fondant.

Tools I used

I have put a list below showing all the tools that I used throughout this video or if you would like to see all my favourite cake decorating tools just click here: https://www.amazon.co.uk/shop/cakesbylynz

Glass Cutting Board: https://amzn.to/2BLqcaE
Turn Table: http://amzn.to/2CfVJUl
Metal Scrapper Tool (small): http://amzn.to/2BNjf7v
Offset spatula (small): https://amzn.to/2yD7btn
Piping bags: http://amzn.to/2xqeDlM
Raspberry Colour Splash: https://amzn.to/2XSvYF2

~ Please note that some of links above may be affiliate links. If you click the link and purchase any item through that link, I will receive a small commission from the website but this does NOT add any additional costs to you. Thank you so much for supporting this blog x ~

Plus why not save this tutorial for later and pin it to Pinterest

Covering a buttercream cake
Buttercream Recipe

Vanilla Buttercream Frosting Recipe

Author: Cakes by Lynz
Smooth buttercream frosting that can be used to fill and cover your cakes or pipe onto cupcakes
Prep Time 5 minutes
Decorating Time5 minutes
Servings 12 Cupcakes
Recipe Type Buttercream
Keyword American Buttercream, Frosting

Ingredients
  

  • 340 g Icing Sugar (12oz)
  • 170 g Room Temperature Salted Butter (6oz)
  • 1.5 tbsp Milk
  • 1 tbsp Vanilla Favouring or favouring of your choice

Instructions

  • Sift your icing sugar into your mixing bowl to get out any lumps. Then add your butter, milk and flavouring.
  • Either using a hand mixer or stand mixer set your mixer onto a low speed until the ingredients start to combine. This will stop the icing sugar escaping from the bowl.
  • Once the ingredients have started to combine turn your mixer up to a medium / high speed and let your buttercream mix for at least 5 minutes.
  • After 5 minutes you should have a smooth, creamy buttercream mixture. Using food gel colours you can now add a colour of your choice, before adding it onto your cakes.

Notes

Buttercream naturally has a yellow colour due to the butter. If you are looking to create a white buttercream check out how to lighten your buttercream here!

Thank you for reading!

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One Response

  1. Hello Lynz! Can you help me please! When I’m putting decorations on the cake, made with sugar paste and gel colors, they’re always leaving color on the buttercream, there’s some solution? Best regards, Valerie

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Hi, I’m Lynsey and welcome to Cakes by Lynz. I LOVE everything cake! Here you will find all my latest cake decorating video tutorials from my YouTube channel, reviews and general cake ramblings!

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