Broccoli Cornbread

1 stick butter or margarine, melted
1 small onion, finely chopped
1 package chopped frozen broccoli (thaw and drain well)
1 tsp salt
6 oz. (3/4 c.) small curd cottage cheese or sour cream
4 eggs, beaten with fork
8 1/2 oz. Jiffy Cornbread mix

Combine the first six ingredients and stir well.  Add Jiffy Cornbread mix last.  Stir only until completely mixed.  Pour into greased and floured 9 x 13 pan.  Bake at 400 degrees for 20 to 25 minutes.