These zucchini boats are hollowed-out zucchini halves filled with seasoned ground beef, diced vegetables, and melted cheddar, then baked until the cheese is golden. The honest reason to make them: you get a filling, cheesy beef dinner with almost no carbs, and the whole thing comes together with ingredients most kitchens already have on hand.
Before you start
The two things that matter here are draining the beef properly and keeping the zucchini hull thick enough to hold the filling. After cooking the beef and vegetables, tilt the pan and spoon off the rendered fat — if you skip this, the filling turns greasy and the boats sit in a puddle of liquid in the oven. When you scoop out the zucchini, use a small spoon and work slowly; the recipe calls for roughly a ⅓-inch wall, and that’s the right call. Go thinner and the boats collapse under the weight of the filling. The scooped-out flesh can go straight into the filling mix or into a soup later — no need to waste it.
Smart swaps
- Ground beef: Ground turkey or chicken works — just cook to 165°F (74°C) internal temperature and expect a slightly leaner, less rich result. Ground pork is also a solid swap.
- Jalapeño: Any fresh chili you have works. No fresh chili at all? A pinch of red pepper flakes or a dash of hot sauce stirred into the filling does the job.
- Corn: Frozen corn is fine — no need to thaw it first. Canned corn, drained, works too. Skip the corn entirely if you don’t have it; the filling holds together without it.
- Mushrooms: These add bulk and absorb the beef fat well, but they’re optional. Diced celery or extra red pepper are easy stand-ins.
- Ketchup: This is the binding liquid and adds a mild sweetness. A spoonful of tomato paste thinned with a little water, or plain tomato sauce, works just as well.
- Cheddar: Any meltable cheese you have — Monterey Jack, mozzarella, Colby — is fine. Skip the garnish of extra cheese on top if you’re running low; the ¾ cup mixed into the filling is the part that matters.
If something goes sideways
- Filling is watery in the oven: The beef wasn’t drained well enough, or the zucchini released moisture. Blot the inside of the scooped zucchini with a paper towel before loading them, and make sure the filling is dry before it goes in.
- Zucchini is still firm after 25 minutes: Oven temperatures vary. Give them another 5–10 minutes. A fork should pierce the hull with light pressure when they’re done.
- Cheese is browning too fast before the zucchini is cooked through: Lay a loose piece of foil over the top for the last 10 minutes.
- Filling keeps falling off the sides: The boats were overfilled or the filling was too loose. Pack the filling firmly and mound it slightly above the rim — it will settle as it bakes. A drier filling (better-drained beef, less ketchup) stays put better.
- Boats tipping in the pan: Trim a thin slice off the rounded bottom of each zucchini half to give it a flat base before you scoop. A small piece of crumpled foil under each boat also works.
Keeping and reheating
Cooked boats keep in an airtight container in the fridge for up to 3 days. Reheat in a 350°F (175°C) oven for about 12–15 minutes — this keeps the zucchini from going rubbery, which is what happens in the microwave. If you’re in a hurry, the microwave is fine for 2 minutes on medium power, but the texture will be softer. The assembled, unbaked boats can be refrigerated overnight and baked straight from the fridge; add 5 extra minutes to the bake time. For freezing, the cooked filling freezes well for up to 2 months, but the baked zucchini shells do not — they turn mushy on thawing. Freeze the filling separately and scoop it into fresh zucchini when you’re ready to cook again.
Chilli-Cheese Zucchini Boats (Low-Carb & Easy)
Equipment
Ingredients
¾ pound ground beef - minced beef, about 340g
2 medium zucchini - about 8 inches / 20cm each, approximately 200g each
½ yellow onion - diced
½ red pepper - diced
1 jalapeño - diced
½ cup corn kernels - fresh, frozen, or canned and drained, about 80g- ¼ cup white or cremini mushrooms - diced, about 25g
1 cup cheddar cheese - shredded, about 115g
3 tablespoons ketchup - about 45ml
salt - to taste, start with 1/2 teaspoon
ground black pepper - to taste, start with 1/4 teaspoon- 1 cooking oil or spray - for the skillet
Instructions
- Heat a 12-inch (30cm) skillet over medium-high heat. Add a drizzle of cooking oil, then add the ground beef, breaking it into small pieces with a spoon. Cook for 5–6 minutes until browned. Add the diced onion, red pepper, jalapeño, and mushrooms. Sauté for 3–4 minutes until the vegetables have softened.1 cooking oil or spray, 3/4 pound ground beef, 1/2 yellow onion, 1/2 red pepper, 1 jalapeño, 1/4 cup white or cremini mushrooms
- Tilt the skillet and spoon off the rendered fat. Stir in the corn, ketchup, salt, and pepper. Mix in ¾ cup (85g) of the shredded cheddar until evenly combined. Remove from heat.1/2 cup corn kernels, 3 tablespoons ketchup, salt, ground black pepper, 1 cup cheddar cheese
- Slice each zucchini in half lengthwise and trim off both ends. Using a small spoon or melon baller, scoop out the seeds and flesh, leaving a wall approximately ⅓ inch (8mm) thick. Reserve the scooped flesh for the filling or another use.2 medium zucchini
- Place the hollowed zucchini halves cut-side up in a 9×13 inch (23x33cm) baking dish. Divide the beef filling evenly among the four zucchini halves, mounding it slightly above the rim.2 medium zucchini
- Sprinkle the remaining ¼ cup (30g) of cheddar cheese evenly over the tops of the filled boats. Bake at 350°F / 175°C (180°C fan-forced) for 25–30 minutes, or until the cheese is golden and bubbly and the zucchini is fork-tender.1 cup cheddar cheese
Notes
Nutrition
FAQ
Can I make the filling ahead of time?
Yes — cook the filling completely, let it cool, and refrigerate it for up to 2 days before assembling. When you’re ready, scoop the zucchini, load the cold filling in, top with cheese, and bake; the filling just needs a couple of extra minutes in the oven to heat through.
Do I need to pre-cook or salt the zucchini before filling it?
No pre-cooking is needed for this recipe. Salting and patting dry the inside of the scooped shells does reduce moisture release during baking, which helps keep the filling from getting watery — worth doing if your zucchini are large.
What size zucchini should I buy?
Medium zucchini — roughly 7 to 8 inches long and about 2 inches wide — are the most practical. Very small ones don’t hold enough filling for a satisfying portion, and very large ones have a thick, seedy core that takes longer to cook through and has less flavor.
How do I know the ground beef is cooked through?
Ground beef is safe to eat at an internal temperature of 160°F (71°C). Visually, there should be no pink remaining and the juices in the pan should run clear — at that point you’re good to drain and mix in the remaining ingredients.
If you liked this one
- Spicy Beef Stuffed Peppers
- Hearty Beef Cauliflower Bake
- Ultimate Cheesy Beef Bake
- Savory Stuffed Onion Dolma
