Trim the ends off zucchini. Cut zucchini in half lengthwise. Scoop out the center, leaving 1/2 inch around the edges. Reserve the insides for another dish, or chop it into small pieces to add to the filling.
Place the zucchini boats in a greased 9” x 13” baking dish. Bake them in the oven for 5 minutes.
Meanwhile, in a skillet, cook the beef, zucchini pulp, onion, mushrooms and peppers over medium heat until the meat is browned. Remove from the heat. Add 1/2 cup cheese, garlic powder, salt and pepper. Stir to combine.
Remove the zucchini from the oven. Spoon the filling into the zucchini shells, pressing it down to compact. Sprinkle with the remaining cheese. Bake, uncovered, on 375°F for 10-15 minutes.
The information shown is an estimate provided by an online nutrition calculator. It should not be considered a substitute for a professional nutritionist’s advice.