Rinse chile peppers and gently remove seeds. Set aside.
Combine cheeses. Stuff each chile with 3 tablespoons cheese. Arrange chiles in a greased 12x7x2-inch baking dish. Sprinkle remaining cheese over chiles. Combine eggs and remaining ingredients, mixing well. Pour over chiles. Bake at 350° for 30 minutes, until set.
Chile Relleno Casserole serves 6.