How to Make a Number 7 Birthday Cake
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How to Make a Number 7 Birthday Cake

This article includes step-by-step instructions for creating a number 7 birthday cake. Pictures are included that show the process of creating a number 7 cake.

Making a homemade number 7 cake is an easy and fun way to celebrate any birthday or anniversary. Here are step-by-step instructions on how to create a number 7 cake to decorate any way you choose. Creating a number cake requires a little planning, patience and careful cutting but is easy enough for even beginning bakers to tackle.

First, you start by baking a cake in the size of your choice. I like using the Wilton 11x 15 sheet pan, since it’s large enough to make an impressive number 7, but it also fits into my oven easily.

Use any boxed cake mix or homemade recipe of your choice. I prefer using boxed cake mix for this type of cake, since it’s very easy to achieve perfect results, and a nice texture to be able to carve. This sheet pan requires two boxed cake mixes, but you must follow the instructions provided and measure out the batter, since filling up the cake pan to the appropriate level requires a little less than the full amount of batter.

Once your cake has cooled for about 15 minutes, use cake boards to flip it out of the pan. Do not let your cake completely cool in the pan, it will stick. A useful product for making sure your cakes do not stick is Wiltons Cake Release. This product works very well, especially when used with the Wilton cake pans. It comes in a squeeze bottle and you just squirt a bit of the product onto your pan and grease your pan as usual, using a paper towel.

Buying a pack of cake boards is a good idea, since they are useful for handling your cake. Place a cake board on top of the cake pan, carefully flip it out and lift the pan away. Your cake should slide out easily. If it does not, do not force it, just flip it back to an upright position and use a butter knife to loosen the edges and try again. Once you feel the cake separate from the pan, lift it away gently to make sure your cake has not cracked. Place another cake board on top of your cake and flip it over again, so the cake sits flush against the cake board.

Allow your cake to cool completely before applying a crumb coat of buttercream icing to your cake. This step helps seal in all of the moisture to make sure you have a delightful cake, as well as prevents crumbs from invading your final frosting job.

The next step in creating your number 7 cake is sketching out your number 7. I used wooden skewers to make 3 easy impressions onto the thin layer of icing on my cake.

Now you have to cut out your number 7. This is a very easy number cake to create. There are only three simple cuts to make. Use a sharp, serrated knife and slice through evenly, trying not to saw through. Pull the cut cake away, and wrap it up in saran wrap to keep moist. You can use this cake to serve people who do not like a lot of buttercream.

Now that your number 7 cake is cut, it’s time to frost it with buttercream frosting.

It’s a good idea to use your angled spatula to crumb coat the inside portion of the 7 before beginning to frost the entire cake. Just build up icing onto your spatula and using the handle press the spatula against the side of your cake and smooth on, the more icing you have on your spatula, the better. Then scrape off the excess, so that there is just enough to seal in all the loose crumbs. Once the crumb coat crusts over, then it’s time to finish the cake.

Once you frost your cake smooth, you can decorate it any way you want. For this cake, I recreated the stars that were on the birthday invitation with Wilton’s premade Ready-to-Use Rolled Fondant and Wiltons cookie cutter star shape. I also used Tip 21 to add a shell border to the cake.

The invitation also included flames, which I tried to make myself using the premade fondant. I just rolled out the two colors with a rolling pin and blended them, and tried to cut out a flame shape. This was the closest I could get to a flame design, but it worked for the party. This just proves that when decorating a homemade cake, it really does not have to be perfect, just have fun and see how it turns out.


  • Make sure your cake board is slightly bigger than the pan you are using.
  • Buy a cake box if you have to transport your cake, they are available at craft stores such as Michaels in the cake decorating section, along with the cake boards.
  • Keep fondant covered with saran wrap while working with it, to prevent it from drying out.
  • If you are making one number cake, bake and decorate cupcakes to help add to the décor and to provide extra servings.    


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Comments (4)

I just wanted to say Thank you so very much for these very easy step by step instructions. I was so nervous about making this cake. I looked everywhere for a number 7 cake pan and I was unsuccessful. Tonight I made a practice cake and it came out great. Thank you for taking the time to post pictures and detailed instructions. Thank you, Thank you, Thank you. God Bless you.

Ada, You're Welcome!! Thank YOU for taking the time to share your story. Your cake will be wonderful!! I'm glad the article helped you. And your comment made my day! ;o) Good Luck!!

Thanks for the excellent information. Iam looking forward to reading more from you. Include the other numbers. Voted up.

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