Step 1

Preheat oven to 400 degrees. Cut zucchini in half lengthwise. Use a tablespoon to scoop out seedy center and discard. Arrange side by side, cut side up, on a baking sheet or in a casserole dish.

Step 2

In a large skillet over medium-high heat, brown sausage (or turkey) for 4-5 minutes, using a spatula to break into small pieces as it cooks. (See note 1 if using ground turkey)

Step 3

Add bell peppers and mushrooms and saute 2-4 minutes until tender.

Step 4

Stir in garlic, marinara sauce, and Italian seasoning.

Step 5

Spoon mixture into the zucchini boats

Step 6

Bake for 15 minutes.

Step 7

In a small bowl stir together panko bread crumbs and olive oil.

Step 8

Top zucchini boats with mozzarella cheese, then the panko.

Step 9

Bake for 5 minutes longer until cheese is melted and panko is golden. Serve immediately.