Create a shallow crevice in the zucchini, with a spoon, discard filling. Microwave zucchini for 2 minutes, to soften. Use a paper towel to soak up any moisture.
In a small bowl, mix together tomato sauce with Italian seasoning. Add a tablespoon of sauce to each crevice of the zucchini, spread.
Top with an even layer of meat on each zucchini boat.
Layer an even amount of cheese and dust oregano on top of each boat.