Step 1

Preheat the oven to 375 degrees.

Step 2

Cut the zucchinis in half horizontally. Scoop out the centers with a large spoon.Coat the interior with olive oil and place in a 9x13 pan.

Step 3

Place the hamburger and onion in a large skillet. Stir and cook until the meat is cooked through.

Step 4

Stir in the centers of the zucchinis, garlic, tomatoes, 1/2 cup bacon, oregano, salt, and pepper and bring to a slight boil. Lower the temperature and simmer for 5 minutes.

Step 5

Stir in the Parmesan cheese and 3/4 cup cheddar cheese. Spoon the mixture evenly into the zucchini shells, mounding it up. Sprinkle the tops with the remaining cheese. Bake 25 minutes.

Step 6

Serve immediately with extra bacon, tomatoes, lettuce, and green onions.