Step 1

Preheat oven to 350 degrees.

Step 2

In a large bowl, beat eggs with a hand mixer on medium speed for 3 minutes or until light and lemon-colored. Combine the flour, baking powder and salt in a different bowl. Gradually add eggs and mix well. Stir in cheeses and ham.

Step 3

Pour into greased 13x9 in. baking dish. Bake at 350 degrees for 35-40 minutes or until a knife inserted near the center comes out clean. Let stand 5 minutes before serving.