Who lives in a pineapple under the sea? My daughter is crazy about Spongebob characters – Spongebob Squarepants, Patrick Star, Squidward, and Mr. Crab. She watches him every single day. So, of course, no surprise that she wanted a Spongebob birthday cake. In fact, we even made SpongeBob’s Pineapple house on another birthday and I’ll be sharing that tutorial with you very soon. The cake is fairly simple and easy to make. The little details do take time, so make sure you keep ample time and space for the small jobs work so you are not overwhelmed with too much to do.
Materials
Cake
For Spongebob, I am using my chocolate vanilla sheet cake (recipe below)And, for Patrick, I am using my sphere cake recipe.
Fondant
This is my marshmallow fondant. And yet, you can also use my homemade fondant recipe or vegetarian fondant recipe.I’ve used Magic colors yellow for Spongebob.Patrick is skin tone with a little pink food gel color added.The rest are small amounts of red, blue, black, white fondant.
Spongebob cake recipe & tutorial
Cake recipe for Spongebob
Preheat the oven to 350°F / 177°C / Gas Mark 4Prepare a sheet cake pan (or rectangle cake pan) for baking – grease, and line with parchment paper. In a bowl combine flour, baking powder, baking soda, and salt – set aside.In the mixing bowl of a stand mixer cream butter and sugar until light and fluffy. Add eggs one at a time until well combined. Use a spatula and scrape the sides of the bowl when necessary.Next, add the flour and milk mixture in three batches. Followed by the vanilla extract.Vanilla batter – Lift one side of the sheet cake pan by placing a small plate or spoon under one side of the pan. Pour half the cake batter. It will rest on one side.Chocolate batter – Add the cocoa and milk mixture to the other half and remove the bowl/spoon from under the pan and pour the second cake batter.Bake in the preheated oven on the middle rack for about 30 to 40 minutes – or until the toothpick inserted into the center comes out clean. Cool in the pan for 10 minutes, then invert on a cooling rack and cool completely before youPro tip – putting the cake in the freezer for an hour makes it easier to carve with less crumbs.
Spongebob cake
Print a picture of the character (Spongebob Square Pants) for inspirationLevel – cut any dome off the cake with a serrated bread knife. Brush the cake with sugar syrupPro tip – for sugar syrup boil water and sugar in a small saucepan over medium heat. Brush this sugar mixture all over the cake.Cut the cake in half then in half again. This will give you 4 – 3 x 9-inch pieces. Cut each piece to about 6 inches. Stack two pieces with buttercream (see video)Add three dowels (I use straws) a cake circle/board 2.5 x 5-inch pieces. Add the next two layers with frosting in between.Then, crumb coat with ganache. Chill 15 minutes then coat with more ganache. Chill another 15 minutes
Meanwhile, roll out yellow fondant. Cut strips about 8 x 9 inches for the front and back and 4 x 7 inches for the sides. (don’t make them too large to prevent waste)Lay the fondant on a baking tray lined with parchment paper. Chill the fondant pieces in the fridge for 10 minutes. Then, brush the cake with water and panel the cold fondant pieces to Spongebob. Use a cake smoother to cut off the excess as shown in the videoPro tip – Chilling the fondant will help make it firm so you can work with it easily. Once on the cake, it will thaw again so become soft.Once the cake is paneled and the excess cut off. You can now make holes using a ball tool (if you don’t have a ball tool dip your knuckles in flour and gently press in)After this, it is time to make and glue the remaining details for decoration as shown in the video.Spongebob’s eyes – White fondant with blue and black for the pupils.Brown pants – with a rolling pin roll a long strip of fondant about 11/2-inches thick. Roll on the work surface like a jelly roll, then unroll it onto the cake as shown in the video. You will also need a thin strip of black for his belt as wellShirt – A strip of white above the belt. Don’t forget to make his tie and collarHands and Legs – Roll the same yellow fondant into a thin cylinder. Cut and shape as shown in the video.Shoes – Small balls of black rolled into a ball then shaped into a shoe as shown in the videoNose – you will need a small piece of yellow fondant rolled into a cylinder about 5-inches long – Use a cocktail stick to attach it to the cake.Small details – mouth, teeth, tongue, outline for the eyes, eyebrows, etc.
Patrick Cake tutorial
Print the picture of the character to use as a reference.Bake two dome/ sphere cakes using a ball pan. Cool completelyJoin the two halves with frosting to make a ball. Chill so the frosting holds them together.Place them on the cake board – cut off a little on the bottom to create a flat base.Use cake trimmings mixed with frosting (cake pop mixture) to create Patrick’s tall head (see video)Frost the cake with ganache – and smooth with a spatula then plastic scraper.Chill the cake for at least 30 minutes
Roll the fondant and cover the cake as shown in the video. Cut off excess then use your hands to rub gently and seam the edgesNow make the rest of the fondant details and glue them on the character as shown in the videoPatrick’s Pants – Lime green fondant with purple flowers. As shown in the video roll the two sides in and then unroll onto the cake.Patrick’s eyes – white fondant in oval shapes with black circles.Hand and legs – Patrick’s hands are the same color as his body rolled into a cylinder than tapered towards the end.Mouth – A black strip for the mouth.
Base of the cake
Sand – I used cookie crumbs and brown sugar pulsed in the food processor for the sandShells – The shells are melted white chocolate in shell molds.
Tips for success
I like to bake the cake at least a day ahead and make sure to cool it completely otherwise the frosting will melt In fact, the best way to make fewer crumbs during carving is to freeze the cake for at least an hour. Roll the fondant about 1/4 inch thick so it’s easier to handle. Chilling the fondant stiffens the sugar in the fondant making it surprisingly easier to handle.Dust the edges of the cutters with flour to make clean edges.
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