Cream the Butter and Sugar: Start by creaming the butter with the sugar and honey in a mixing bowl until light and fluffy.
Add Eggs: Incorporate the whole egg and egg yolks into the mixture, blending thoroughly.
Mix Dry Ingredients: In a separate bowl, sift together the flour, corn starch, and baking powder. Gradually add this to the butter mixture until well integrated.
Roll Out the Dough: Roll out the dough between two sheets of plastic or parchment paper to a thickness of about 4 mm.
Refrigerate and Cut: Place the rolled dough in the fridge for about 15 minutes. After that, cut out 5 cm circles using a cookie cutter.
Bake: Preheat your oven to 180°C (350°F) and bake the cookies for 6 to 8 minutes. They should remain pale in color.
Fill the Cookies: Once cooled, fill half of the cookies with quince candy and the other half with dulce de leche.
Glaze: To prepare the glaze, mix water and sugar in a saucepan, bring to a boil, and cook until it reaches 118°C (244°F). In a separate bowl, whisk the egg white, impalpable sugar, and lemon juice until smooth, then gradually add the hot syrup, continuing to beat until fully combined.
Coat the Cookies: Dip the filled cookies in the glaze, let excess drip off, and place them on parchment paper to dry.