Quesadilla Salvadore?a

Step 1
Gather all ingredients.

Step 2
Preheat the oven to 350 degrees F (175 degrees C).

Step 3
Beat egg whites in a glass, metal, or ceramic bowl until firm but not stiff.

Step 4
Combine sugar and melted butter in a large bowl; beat on high speed until creamy.

Step 5
Mix in egg yolks until well blended.

Step 6
Gradually mix in Parmesan cheese. Add sour cream and baking powder; beat until batter is smooth.

Step 7
Sift rice flour over batter, then fold it in with a spatula. Fold in egg whites.

Step 8
Pour batter into a 9×13-inch glass baking dish. Sprinkle sesame seeds on top.

Step 9
Bake in the preheated oven until golden brown on top and a toothpick inserted into the center comes out clean, about 38 minutes.