Would two square caks do to make a rectangle cake and can I join the cakes without showing on icing?

Yes, you can definitely use two square cakes to make a rectangle cake! Here's how you can join them seamlessly:

Joining the Cakes:

1. Leveling: Use a serrated knife or cake leveler to ensure both cake layers are perfectly flat.

2. Trim: If one cake is slightly larger than the other, carefully trim the edges to match the dimensions.

3. Frosting: Apply a thin layer of frosting (crumb coat) to both cut sides of the cakes. This helps create a smooth surface for the final layer of icing.

4. Join: Place the two cakes side by side, pressing them together gently.

5. Even Out: Use a long, flat spatula to smooth the frosting and create a seamless line where the two cakes meet.

6. Chill: Refrigerate the cake for at least 30 minutes to firm up the frosting and make it easier to work with.

Hiding the Seam:

* Decorative Icing: Use a piping bag and frosting to create a decorative border or design along the seam. This will effectively disguise the join.

* Ganache: Cover the entire cake with a smooth layer of ganache. This will hide any imperfections and create a beautiful, elegant finish.

* Sprinkles: Decorate the cake with a generous layer of sprinkles. This will add a fun, playful touch and cover any visible seam.

Tips:

* Use a cake board: This will provide a sturdy base for your rectangle cake.

* Don't over-frost: Too much frosting can make the seam more noticeable.

* Chill the cake: This will help the frosting set and create a smoother finish.

Enjoy your delicious rectangular cake!