Preheat oven to 400 degrees.
Melt butter in baking pan (in microwave).
Beat eggs lightly by hand.
Add flour, salt and baking powder.
Pour in melted butter.
Add chiles, cottage cheese and jack cheese.
Mix until blended.
Bake for 15 minutes at 400 degrees.
Turn oven down to 350 degrees.
Bake another 35 to 40 minutes.
Cut into squares and serve hot.