Steam broccoli for 5 minutes or cook in the microwave with 2 tablespoons water.
Chop the broccoli very small.
To make the filling, combine ricotta, mozzarella, Romano/Parmesan Cheese ,oregano, parsley, pepper and salt. Mix to combine thoroughly.
Add the broccoli and mix to combine.
Cook 8 oz. of the pasta shells in salted, boiling water for 10 minutes. Drain and run cold water over shells immediately. Leave in cool water for the shells not to stick.
Preheat oven to 375 F.
Take each shell and fill each shell with the broccoli filling.
In a large casserole dish, pour about 1 1/2 cups of the marinara sauce on the bottom.
Place the stuffed shells on top of the marinara sauce.
Add another 2 1/2 cups of marinara sauce on top.
Sprinkle mozzarella cheese and parmesan cheese on top.
Add remaining Marinara Sauce over the shells.
Place in oven for 40 minutes.