Combine 1 cup flour, undissolved yeast, sugar, onion, dill weed, salt, garlic powder and baking powder in a large bowl. Heat cottage cheese, feta cheese, water and butter until very warm (120° to 130°F). Pour into flour mixture; add egg. Beat for 30 seconds with electric mixer to combine. Increase speed to high and beat for 3 minutes.
Stir in remaining 1-2/3 cups flour to make a stiff batter. Cover and let rest for 10 minutes. Stir down and spoon into greased 1-1/2 to 2-quart round casserole. Cover and let rise 30 to 45 minutes or until doubled.
Bake at 350°F for 35 to 45 minutes or until done. Remove from casserole and cool on wire rack.