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Keto Stuffed Zucchini Boats

Keto zucchini boats packed with cheesy, herbed ground beef with tender shells pre-baked to cut moisture. Browned, golden mozzarella melts over the filling for a low carb zucchini boats dinner with no starchy fillers.
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 4 servings
Course: Main Dish
Cuisine: American
Calories: 650

Ingredients
  

zucchini
  • 4 zucchini medium, halved lengthwise
ground beef
  • 1.5 lb ground beef (80/20)
garlic
  • 4 garlic cloves, minced
cherry tomatoes
  • 1 cup cherry tomatoes halved
Italian seasoning
  • 1 tsp Italian seasoning
smoked paprika
  • 0.5 tsp smoked paprika
red pepper flakes
  • 0.25 tsp red pepper flakes
salt
  • salt to taste
black pepper
  • black pepper to taste
mozzarella cheese
  • 1.5 cup mozzarella cheese shredded
parmesan
  • 0.25 cup parmesan grated (about 1/4 cup)
olive oil
  • 2 tbsp olive oil
fresh basil
  • fresh basil for garnish

Equipment

  • 1 sheet pan
  • 1 cast iron skillet

Method
 

Prep and pre-bake zucchini
  1. Preheat the oven to 400°F so it reaches a steady baking temperature before the boats go in. Visually confirm the oven is fully heated.
  2. Halve the zucchini lengthwise and scoop out the centers, then discard or save the flesh for another recipe. Brush the shells with olive oil and season with salt and black pepper.
  3. Pre-bake the zucchini shells cut-side up in a baking dish for 8 minutes to remove excess moisture. Look for slightly softened shells without browning.
Cook the beef filling
  1. Brown the ground beef in a skillet over heat, then drain excess fat. Cook until no pink remains.
  2. Add minced garlic and cook briefly, then stir in cherry tomatoes, Italian seasoning, smoked paprika, red pepper flakes, salt, and black pepper; cook for 4 minutes. The mixture should look juicy and evenly seasoned.
Stuff, top, and bake
  1. Fill each zucchini shell with the beef mixture, packing it lightly so it holds together. Make sure the filling reaches near the top of each boat.
  2. Top with shredded mozzarella and sprinkle with grated parmesan. Cover the filling evenly so every bite gets cheese.
  3. Bake for 12–15 minutes at 400°F until the cheese is golden and bubbly. Watch for browned cheese edges and active bubbling in the center.
Serve
  1. Garnish with fresh basil and serve immediately. Add basil right before serving for the brightest aroma.

Notes

For firmer boats, avoid over-scooping—leave enough zucchini wall to hold the filling. Refrigerate leftovers in an airtight container for up to 3–4 days; reheat in a 350°F oven until hot and the cheese re-melts. Freezing isn’t recommended because zucchini can turn watery when thawed. For a more carnivore-style swap, omit the cherry tomatoes and use extra seasoning to keep the beef bold.