This delicious cheese and spinach souffle dish is perfect to serve for brunch or supper.

Cheese and Spinach Soufflé Squares

3 tablespoons grated Wisconsin Parmesan cheese
1/4 cup butter
1/4 cup all-purpose flour
1/2 teaspoon salt
1/8 teaspoon pepper
1 cup sour cream
7 large egg yolks
1 cup (4 ounces) shredded Wisconsin Sharp Cheddar cheese
1/2 cup grated Wisconsin Parmesan cheese
1 (10-ounce) package frozen chopped spinach
7 large egg whites
1/4 teaspoon cream of tartar

1. Generously butter a 13x9-inch baking dish. Sprinkle 3 tablespoons Parmesan cheese over bottom of baking dish.
2. Melt 2 tablespoons butter in saucepan over low heat. Blend in flour, salt and pepper. Cook and stir mixture until smooth and bubbly. Remove from heat. Stir in sour cream. Heat until thickened, stirring constantly. Remove from heat again.
3. Beat egg yolks until thick and lemon-colored. Stir 1/4 cup sauce into egg yolks. Stir yolk mixture back into sauce. Add cheeses, mixing until well-blended.
4. Cook spinach according to package directions. Drain and squeeze out excess liquid. Stir into cheese mixture. Cover and set aside.
5. In a large bowl, beat egg whites until frothy. Add cream of tartar; beat until stiff but not dry.
6. Stir about 1 cup of egg whites into cheese mixture. Gently fold mixture into remaining egg whites.
7. Pour into prepared baking dish.
8. Bake at 350°F (175°C) for 20 to 25 minutes, or until knife inserted halfway between edge and center comes out clean. Serve immediately.

Makes 6 servings.

Recipe provided courtesy of Wisconsin Milk Marketing Board, Inc.