Banoffee souffle

Name: Banoffee souffle
Ingredients: 300 milliliter Milk; 2 Egg yolks; 2 tablespoon Sticky rice flour ( can substitute with corn starch); 1 teaspoon Vanilla extract; 3 Egg whites; 60 gram Sugar; 1 teaspoon Cream of tartare; pinch Salt; 150 gram Bananas (from 3 very small bananas); 4 tablespoon Dulce de leche; 6 Graham crackers, crumbled; Melted butter, for the ramkins; Sugar, for the ramkins