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Italian Sausage Stuffed Zucchini Boats

Italian sausage zucchini boats with marinara-simmered filling and roasted peppers, baked until the zucchini is tender and the mozzarella turns deeply golden. Each boat is packed with browned Italian sausage and topped with parmesan for a melted, char-kissed finish.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 4 servings
Course: Dinner
Cuisine: Italian-American
Calories: 690
Ingredients Equipment Method Notes

Ingredients
  

Zucchini boats base
  • 4 large zucchini
Sausage filling
  • 1 lb Italian sausage casings removed (hot or mild)
  • 1 red bell pepper diced
  • 1 small onion diced
  • 3 garlic cloves minced
  • 0.5 cup marinara sauce
  • 1 tsp Italian seasoning
  • 0.25 tsp red pepper flakes
  • 0.1 salt and pepper to taste
Cheese topping
  • 1.5 cup mozzarella cheese shredded
  • 0.25 cup parmesan grated
  • 1 fresh basil for garnish

Equipment

  • 1 sheet pan
  • 1 cast iron skillet

Method
 

Prep and preheat
  1. Preheat oven to 400°F, and set a sheet pan inside while it heats.
  2. Halve zucchini lengthwise, scoop out the centers leaving about a 1/4-inch shell, and chop the removed flesh.
Cook the sausage filling
  1. Cook Italian sausage in a skillet over medium-high heat, breaking it apart, until browned, then drain excess fat (visual cue: no pink remains).
  2. Add diced bell pepper, diced onion, and chopped zucchini flesh, then cook for 4 minutes until softened (visual cue: vegetables look glossy and slightly reduced).
  3. Add minced garlic, marinara sauce, Italian seasoning, and red pepper flakes, then simmer for 3 minutes until the mixture thickens slightly (visual cue: bubbling around the edges).
Assemble and bake
  1. Fill each zucchini shell with the sausage mixture and season with salt and pepper to taste (visual cue: filling reaches the top of the shell).
  2. Top with shredded mozzarella and grated parmesan so the cheese covers every inch of the top (visual cue: an even, thick layer).
  3. Bake for 20–25 minutes at 400°F until zucchini is tender and the cheese is deeply golden (visual cue: golden spots with slight char).
Finish
  1. Garnish with fresh basil and serve immediately (visual cue: bright green leaves on top).

Notes

For the best boats, bake on a preheated sheet pan so the zucchini edges start to brown early. Store leftovers in the refrigerator up to 3 days; reheat in a 375°F oven until hot and the cheese loosens. Freezing is not recommended because zucchini can soften too much after thawing. If you want a lower-sodium option, use reduced-sodium marinara and season with herbs instead of extra salt.