1 lg. zucchini (I've also used 3 sm.)
1 lb. hamburger
1 chopped green pepper
1 chopped onion
Pulp of zucchini that was scooped from shell, chopped
1 can tomato paste (not sauce, paste holds mixture together)
Salt & pepper
Oregano (opt.)

Slice zucchini in half length-ways. Scoop out pulp leaving a shell. Parboil shell in water 8 to 10 minutes, then drain. Brown hamburger, peppers, onion and cut up zucchini pulp. (If there's liquid, drain.) Add tomato paste. Fill shells with mixture. Place on foil covered cookie sheet and bake at 350 degrees about 45 minutes. If you like, sprinkle with grated cheese when you remove it from oven.