Paraguayan Cheese Cornbread-Sopa Paraguaya - cooking recipe

Ingredients

8 tablespoons butter
1 large sweet onion, finely chopped
1 cup farmer cheese or 1 cup cottage cheese
1 cup grated muenster cheese or 1 cup other mild cheese
2 cups cornmeal
1 cups corn kernels, grated or (16 ounce) can cream-style corn
1 teaspoon salt
1 cup milk
6 eggs, separated

Preparation

Heat half the butter in a skillet and cook the onions over moderate heat until tender but not brown.
Set aside.
Combine the remaining butter with the farmer's or cottage cheese and mix until thoroughly combined.
Add the Muenster, onions, cornmeal, corn, salt, milk, egg yolks, and mix thoroughly.
Beat the egg whites until soft peaks form and fold them into the batter.
Pour the batter into a greased and floured 10 inch by 13 inch (25 cm x 30 cm) baking pan and bake in a preheated 400F (200C) oven for 45 to 55 minutes, or until a toothpick inserted in the center comes out clean.