These melt-in-your mouth Alfajores are a South American sandwich cookie made from two shortbread cookies and a creamy dulce de leche center. You can make these delicious dulce de leche sandwich cookies to go with a warm cup of coffee or for after your dinner. Roll them in shredded coconut, dust them with powdered sugar, or both; no matter how you serve them up they are sure to go fast! und lecker!!!