Colombian Wafer Dessert

Name: Colombian Wafer Dessert
Cuisine: American, Latin American
Ingredients: For the Wafers; 100g all-purpose flour; 2 tbsp corn starch; 1 tbsp sugar; 1 pinch of salt; 1 cup milk (or water for a lighter version); 2 tbsp unsalted butter, melted; 1 tsp vanilla extract; For the Fillings; 200g dulce de leche (arequipe); 100g grated cheese (optional, for a sweet salty contrast); 100g fruit preserves or jam (e.g., guava or blackberry); 50g shredded coconut (optional)