Preheat your oven to 350°F (175°C) and line your baking sheets with parchment paper.

In a mixing bowl, cream together the softened butter and granulated sugar until light and fluffy.

Mix in the eggs one at a time, along with the vanilla extract.

In a separate bowl, whisk together the almond flour, all-purpose flour, baking powder, and salt.

Gradually add the dry ingredients into the butter mixture, mixing until just combined.

Divide the dough into three equal parts and use food coloring to tint each part a different color.

Spread the colored dough into three separate layers on the prepared baking sheets and chill in the refrigerator for at least 30 minutes.

Once chilled, layer the colored doughs on top of each other, spreading jam in between.

Bake for about 25 minutes or until golden and set, then let cool completely before slicing.