Preheat oven to 350 F. Coat a 9” x 13” baking dish with non-stick spray.
Sauté zucchini, onion, and bell pepper in olive oil until slightly tender (about 5-6 minutes) in a large skillet over medium heat.
Add corn to skillet and cook until heated, about 1-2 minutes more.
Transfer vegetable mixture to a large bowl. Add cottage cheese, feta cheese, dill, flour, baking powder, and black pepper. Stir well to combine.
Stir in beaten eggs until well mixed.
Pour mixture into the coated baking dish.
Top with shredded cheddar cheese.
Bake about 40 minutes at 350 F or until egg is set in the center.
