Ingredients: 2 cups all-purpose flour. 1/2 teaspoon baking powder. 1/4 teaspoon salt. 1/2 cup unsalted butter, softened. 3/4 cup granulated sugar. 1 large egg. 1 teaspoon vanilla extract. Yellow food coloring. Red food coloring. Black food coloring. White royal icing. Assorted colored royal icing for decorations.
Instructions: In a bowl, whisk together flour, baking powder, and salt. In another bowl, cream together butter and sugar until light and fluffy. Beat in the egg and vanilla extract until well combined. Gradually add dry ingredients to the wet ingredients and mix until a dough forms. Divide the dough into three portions. Color one portion with yellow food coloring, another with red, and the last one with black. Wrap each colored dough in plastic wrap and refrigerate for at least 1 hour. Preheat the oven to 350F 175C and line a baking sheet with parchment paper. Take a small amount of each colored dough and roll them into thin ropes. Arrange the ropes side by side, pressing lightly to stick them together. Use a knife to cut out Spongebob-shaped cookies from the dough, using a template if needed. Place the cookies on the prepared baking sheet and bake for 10-12 minutes, or until the edges are lightly golden. Allow the cookies to cool completely on a wire rack. Once the cookies are cool, use white royal icing to pipe the eyes and teeth. Use colored royal icing to add details like Spongebob's tie, pants, and facial features. Let the icing set before serving or storing the cookies.