Ingredients:

  • 1 cup (225g) unsalted butter, softened to room temperature
  • 3/4 cup (150g) granulated sugar
  • 1 large (50g) egg
  • 1 tsp (5ml) vanilla extract
  • 2 1/4 cups (280g) all-purpose flour
  • 1/2 tsp (3g) baking powder
  • 1/4 tsp (1.5g) salt
  • 1/2 tsp red gel food coloring
  • 1/2 tsp royal blue gel food coloring

Instructions:

  1. Beat the softened butter and granulated sugar on medium-high until the mixture looks pale and velvety.
  2. Add the egg and vanilla extract, beating until fully incorporated.
  3. Sift in the flour, baking powder, and salt. Mix on low until a soft dough forms; do not overmix.
  4. Split the dough into three equal portions of approximately 1 cup each.
  5. Leave one portion white. Knead red gel coloring into the second portion and blue gel into the third until colors are uniform.
  6. Roll each colored dough into a smooth log approximately 8 inches long.
  7. Lay the red, white, and blue logs side-by-side and roll them together into a single log.
  8. Chill the log in the refrigerator for 2 hours (or 30 minutes via flash-freeze method) to stabilize the fats.
  9. Slice the chilled log into uniform cookies using a sharp chef's knife.
  10. Bake on parchment-lined sheets for 10 minutes until edges are crisp.