Ingredients:

• 100 grams of butter.
• 1 cup of sugar.
• 1 egg.
• 1 teaspoon vanilla.
• 2 cups of flour.
• Cornstarch.
• Baking powder.
• Chocolate chips.

Instructions:

1. In a mixer, combine the butter and sugar and mix well until the sugar dissolves with the butter.

2. Add the egg and a little vanilla, and mix on high speed for three minutes.

3. Add the flour, cornstarch, and baking powder, then stir the dough with a spatula to ensure it's well combined.

4. Fold in the chocolate chips into the dough.

5. Refrigerate the dough for one hour.

6. Place parchment paper on a baking sheet and use a tablespoon to form medium-sized dough balls.

7. Place the balls on the sheet without flattening them, and bake at 180°C for ten minutes until the edges turn brown.