How to Make a Number 7 Birthday Cake

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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.    


Reasons to make a number 7 cake

There are all kinds of reasons to make a cake with the number 7 on it. Reasons like a 7 year anniversary, 7th birthday, 7 years together, and 7 years since we met. 7 is a lucky number, 7 can also mean graduating to middle school, and 7 can also be for your favorite sports player.

Some of the most famous sports players that wore number 7 include:

  • Mickey Mantle of the New York Yankees word number 7.
  • John Elway, one of the best quarterbacks in National Football League history played for the Denver Broncos, is also in the NFL Hall of Fame. He played 16 years for the Broncos and went to the Super Bowl 5 times and won 2 of them. As General Manager of the Denver Broncos he has gotten them to two more Super Bowls, winning one.
  • Phil Esposito of the Boston Bruins was one of the best players ever in the National Hockey League.
  • Tiny “Nate” Archibald was a great player mainly for the NBA.
  • Ted Lindsay, otherwise known as Terrible Ted, played for the Detroit Redwings along side Gordie Howe and he scored over 800 points in his career, was an 9-time All-Star, won the Art Ross Trophy in 1950 as the league’s leading scorer, and is credited for starting a tradition of lifting the Stanley Cup and skating around the rink with the Cup so fans could get a close up look at the trophy.
  • Ben Roethlisberger, quarterback for the Pittsburgh Steelers has become one of the best quarterbacks in the NFL. Known as Big Ben, he actually took the number 7 because of his childhood favorite player, John Elway.
  • Carmelo Anthony. Love him or hate him, he has sure been in the news of the NBA. First starting for the Denver Nuggets, then going to the new York Knicks and recently going to the Oklahoma City Thunder, Carmelo Anthony always has his fans.


herman kerinci
Posted on Feb 4, 2012
Posted on Dec 15, 2011
Grace Fry-Garcia
Posted on Jul 19, 2011
Ada Schmitt
Posted on Jul 18, 2011