SpongeBob SquarePants Tutorial: Modelling with Fondant

SpongeBob SquarePants Tutorial: Modelling with Fondant

Who hasn’t sung the catchy tune “Who lives in a pineapple under the sea! SpongeBob Squarepants!”? Just a few may say no. I’m in the “yes” group, so it’s been a long time since I wanted to make a tutorial dedicated to this cartoon character. I think he’s a nice guy and that his personality crosses all age boundaries.

So today I want to share with you all this tutorial with which you’ll learn how to model a SpongeBob figurine with modelling paste. Here you’ll find a helpful, step by step tutorial. Besides, I’ll teach you how to make SpongeBob’s pineapple house in a quick, simple way. Let’s start!


  • 150gr of Renshaw Modelling Paste, painted with ProGel Lemon
  • 60gr of white Renshaw Modelling Paste
  • 50gr of Renshaw Modelling Paste, painted with ProGel Brown
  • 10gr of Renshaw Modelling Paste, painted with ProGel Ruby
  • 10gr of Black Fondant Renshaw Extra + CMC
  • 150gr of Fondant Renshaw Extra, painted with Tangerine ProGel
  • 80gr of Green Fondant Renshaw Extra
  • 50gr of Baby Blue Fondant Renshaw Extra
  • 250gr of Grey Fondant Renshaw Extra
  • Rainbow Dust Colours: Petrol Blue, Rust, Holy Green, Cherry Pie, Lemon Tart
  • Rainbow Dust Food Art Pen: Brown and Black
  • Edible Glue
  • Maizena
  • Vodka
  • Basic fondant tools (ball tool, dresden, Sugar Shapers by Innovative Sugarworks)
  • X-acto knife
  • Skewer and silicone gun
  • Hard plastic
  • 1 26 gauge wire
  • 1 18 gauge wire
  • Pliers
  • Some brushes


1. Before starting, make a template as big as you want. Stretch the yellow modelling paste until it’s 2cm thick. Place the face template on the paste and mark the silhouette with a cutter blade. Then, make 4 clean cuts in order to get a perfectly cut piece.

2. With the help of a silicone brush, press the sides of the piece in order to get a wave effect. You can straighten all the lines with your fingers to soften them. Don’t add waves on the lower part, because you’ll have to add the shirt and the pants later.

3. Check the size of the eyes with the template and choose the appropriate ball tool. Next, place the template on the modelling paste and mark the centre of the eyes. Then, press with the ball tool until the wholes are as big as the eyes you’ve drawn on the template.

4. Draw the silhouette of the mouth with a Dresden tool. Then, remove the flower paste from the inside of the mouth to get a whole. Keep in mind that you’ll have to fill in that whole with red paste, so don’t be afraid to really empty it.

5. Make 2 equal balls with white modelling paste, brush the eye sockets with a bit of edible glue and place the eye balls. With a small ball tool, make 2 wholes to make the iris. With a bit of yellow paste, make 2 tiny balls and glue them to each side of the mouth. Lastly, randomly make some wholes of differents sizes.

6. Dilute a bit of Petrol Blue colourant  with Vodka and paint the inside of the wholes with a thin brush.

7. Fill the mouth whole with some Ruby modelling paste. Press properly in order to adapt the paste while maintaining the shape of the template.

8. Stretch some white Renshaw Modelling paste and cut 2 small squares. Glue them slightly separated. Make a small teardrop with some yellow modelling paste and glue it between the eyes. That will be the nose.

9. With a black food pen (I use Food Art Pen by Rainbow Dust), draw a circle around the eyes as well as the eyelashes and the eye pupils.

10. Mix some Ruby paste with white paste to abtain a pinky colour. Make a tiny ball and turn it into an oval. Press it with your fingers in order to flatten it and glue it to the mouth. Finally, make a mark in the centre in order to break the mouth in two.

11. Shade the cheeks with a bit of Cherry Pie powder colourant.

12. To make the pants, stretch some Brown Modelling paste until it’s 2cm thick and repeat the same process we followed for the face: use the template and a cutter blade. Do the same with some white modelling paste for the shirt.

13. Make a sheet of Brown Modelling paste (it has to be 0,5cm thick) and cut 2 circle of 1 cm diameter to make the pants.

14. Stick the shirt to the pants. Then, glue them to the body with some edible glue.

15. To add some details, cut 2 white paste triangles for the neck of the shirt. Stretch some Ruby modelling paste and cut the tie. Glue it on the centre. Glue both circles to the distance marked on the template.

16. For the arms, make a strip with a ball on one end. Press the ball and cut it in 4 (for the fingers).

17. Make the sleeves with some white modelling paste. Prick a piece of the 26 gauge wire inside the arm. Poke it to the body and add some edible glue to make sure it sticks correctly.

18. To make the legs, use the 18 gauge wire. Repeat the process we followed with the arms. Prick the wires to the body with some edible glue.

19. In order to finish the body, make the shoes with some Black fondant with CMC. Make a ball and press it on one side to obtain some kind of pear shape. Make 2 socks with some thin, white modelling paste.

20. Use a bit of hard plastic as a support for making the pineapple house topper. That way, you won’t have to wait for the fondant to get dry. Draw the silhouette and cut it.

21. Stretch some orange fondant, put the silhouette on it and cut with an X-acto knife. Being accurate with the cutting and the sizes is very important. Brush some edible glue on the plastic and glue stick the fondant. With a ruler, make some diagonal marks in opposite directions to get the texture of the pineapple.

22. Stretch the green fondant and cut the silhouette of the pineapple leaves. Glue the fondant to the plastic previously brushed with some edible glue.

23. Mark all the leaves with a silicone brush.

24. Shade all the lines of the pineapple with some Rust powder colourant and also shade the leaves with some Holy Green powder colourant, both from Rainbow Dust. Finally, draw a line on the centre of each diamond with a brown food pen.

25. Add the house details with blue fondant. Make a door, 2 windows and a chimney. Then, shade it with some Petrol Blue powder colourant from Rainbow Dust.

26. In order to poke the pineapple house to the cake, you’ll need to add a bit of hot-melt silicone on the back of the house for the skewer to hold on it. Let cool down and the topper will be ready.

27. As those decorations are toppers for fondant, buttercream or ganache cakes, you’ll need to poke them on the cake once you’ve finished decorating it. To finish this tutorial, I decided to cover the top of the dummy. I used a spike brush to add some texture to the floor.

28. Finally, poke the pineapple house on the centre of the street, so it matches the door. Place SpongeBob in front of his house.

The whole process of modelling a figurine of a know character is always the same: start with a template and stick to the proportions. It’s really important to divide the modelling in different pieces in order to model them separately. Wire all the parts and join them to the body once they’ve dried.

I hope this tutorial helps you improve your modellings and toppers to satisfy the most demanding costumers! See you on my next post.

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