Preheat the Oven: Set to 325°F (160°C). Line a baking sheet with parchment paper.

Mix Dry Ingredients: Combine ground almonds and sugar in a medium-sized bowl.

Incorporate Wet Ingredients: Add egg whites and almond extract. Stir until a thick dough forms.

Shape the Cookies: Roll the dough into 1-inch (2.5 cm) balls. Place them on the baking sheet, spacing 1.5 inches (3 cm) apart. Flatten slightly.

Chill the Dough: Refrigerate the shaped cookies for 20-30 minutes.

Bake: Bake for about 20 minutes until light golden brown.

Cool: Allow the cookies to cool completely before removing them from the parchment.

Enjoy your homemade Bitterkoekjes with tea, coffee, or as a delightful snack on their own!