Benne Wafers, Crispy Sesame Seed Cookies

Ingredients

• 1 cup sesame seeds, toasted
• 1 cup firmly packed dark brown sugar
• 4 tablespoons (1/2 stick) unsalted butter, softened
• 1 large egg, lightly beaten
• 1/2 cup all purpose flour
• 1/4 teaspoon. salt
• 1/8 teaspoon baking powder
• 1 teaspoon fresh lemon juice
• 1/2 teaspoon vanilla extract