Slice washed zucchini in half lengthwise into "boats" and use a spoon to scrape/scoop out the seed cavity/insides to make a hollow. Reserve zucchini "guts".
2
Brown beef, onion, and zucchini "guts" in pan until all pink is gone from meat.
3
Drain ant grease and add 1/3 cup water and taco seasoning. Stir to distribute evenly. When almost dry, stir in tomatoes.
4
In a large bowl mix beef and cheese, reserving 1/4 cup of cheese for garnish.
5
Spoon into "boats and place on silpat or oiled cookie sheet, beef side up.
6
Bake 400* for 30 minutes. If zucchini is not done, return to oven and check after 10 more minutes.
7
Remove, sprinkle mozzarella cheese and return to oven. Turn heat off. Cheese will melt in 3-5 minutes. Top with green onions.