Steps
1. Preheat oven to 350°F (175°C).
2. In a bowl, mix flour, sugar, and baking powder.
3. Add egg white and melted butter, stir into a smooth batter.
4. Add yellow food coloring until desired sponge yellow shade is reached.
5. Pour batter into a shallow pan and bake for 8-10 minutes until sponge-like and springy.
6. Let sponge cool, then cut into SpongeBob-shaped pieces using a cookie cutter or knife.
7. Use edible markers or icing to draw SpongeBob's outfit and face on the sponge cookies.
8. Take lotus biscoff cookies and decorate with pink icing or colored white chocolate to resemble Patrick Star’s body.
9. Use edible markers to add Patrick’s facial features and shorts details.
10. Arrange the decorated SpongeBob sponge cookies and Patrick biscoff cookies in a jar for serving.