Prepare the Cookie Dough

Preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a large bowl, mix the almond paste, sugar, and butter until smooth.

Beat in the eggs, one at a time, followed by vanilla extract.

Slowly add the flour and salt, stirring until fully combined.

Divide and Color the Dough

Divide the dough into four equal portions.

Add a few drops of gel food coloring to each portion and knead until the dough is evenly colored.

Assemble the Layers

Roll each colored dough portion between two pieces of parchment paper until it is about 1/4-inch thick.

Layer the doughs on top of one another, pressing gently to adhere.

Refrigerate for 30 minutes to firm up.

Cut and Bake

Slice the layered dough into squares and place them on the prepared baking sheet.

Bake for 15-20 minutes, or until the edges are lightly golden.

Cool completely on a wire rack.

Prepare the Chocolate Coating

Melt the chocolate chips in a heatproof bowl over simmering water, stirring until smooth.

Dip the cooled cookies into the melted chocolate and place them back on the parchment paper to set.

Let Set and Serve

Allow the chocolate to harden before serving. Enjoy your vibrant, delicious rainbow cookies!