Zucchini boats with quinoa
Tender roasted zucchini halves are filled with a savory quinoa mixture of tomatoes, peppers, onion, garlic, and feta, then baked until the tops are lightly browned. This makes 2 hearty servings, with the zucchini soft enough to scoop but still structured, and the filling fluffy rather than mushy.

Estimated calories and US ingredient costs.
This recipe scales well to 4 servings by doubling all ingredients and using two sheet pans or a larger roasting pan so the zucchini halves sit in a single layer. Keep the oven at 425 F, but add a few minutes only if the pan is crowded. For 6 or more servings, bake in batches so the boats roast instead of steaming.
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Ingredients
For 2 people
- 2 medium zucchini, 14 oz total, halved lengthwise and lightly scooped
- 1 tbsp olive oil
- 1/2 cup dry quinoa
- 1 cup water
- 1/2 cup yellow onion, finely diced
- 1/2 cup red bell pepper, finely diced
- 1 cup cherry tomatoes, quartered
- 2 tsp minced garlic
- 2 tbsp tomato paste
- 1/2 tsp kosher salt
- 1/4 tsp black pepper
- 1 tsp dried oregano
- 2 oz feta cheese, crumbled
- 1 tbsp lemon juice
- 1 tbsp chopped parsley
Method
- Heat the oven and start the quinoaSet the oven to 425 F. Line a rimmed baking sheet or a 9x13-inch baking dish with foil or parchment for easier cleanup. In a small saucepan, combine 1/2 cup dry quinoa and 1 cup water. Bring to a boil over medium-high heat, then reduce to low, cover, and cook for 15 minutes until the water is absorbed. Remove from the heat and keep covered for 5 minutes so the grains finish steaming.
- Prepare the zucchini boatsWhile the quinoa cooks, halve 2 medium zucchini lengthwise. Use a spoon to scoop out a shallow trough from the center of each half, leaving about 1/4 inch of zucchini around the edges so the shells hold their shape. Chop 1/2 cup of the scooped zucchini flesh finely and reserve it for the filling. Arrange the zucchini cut-side up on the prepared pan and brush the cut surfaces with about 1/2 tablespoon of the olive oil.
- Par-roast the zucchini shellsSeason the zucchini shells with 1/4 teaspoon of the kosher salt and roast for 10 minutes. This head start keeps the finished boats from becoming watery and gives the edges a little browning before the filling goes in.
- Build the fillingHeat the remaining 1/2 tablespoon olive oil in a medium skillet over medium heat. Add 1/2 cup diced onion and 1/2 cup diced red bell pepper and cook for 4 to 5 minutes, stirring often, until the onion turns translucent and the pepper softens. Add the reserved chopped zucchini, 2 tbsp tomato paste, 2 tsp minced garlic, 1 tsp dried oregano, 1/4 teaspoon black pepper, and the remaining 1/4 teaspoon kosher salt. Cook for 2 minutes, stirring and pressing the tomato paste into the vegetables so it darkens slightly and loses its raw taste.
- Finish the quinoa mixtureStir in 1 cup quartered cherry tomatoes and the cooked quinoa. Cook for 1 to 2 minutes more, just until everything is evenly combined and the tomatoes begin to slump. Take the skillet off the heat and fold in 2 oz crumbled feta, 1 tbsp lemon juice, and 1 tbsp chopped parsley. The filling should look moist but not soupy; if it seems dry, add 1 to 2 tablespoons of water so it mounds easily in the zucchini.
- Fill and bakeRemove the zucchini shells from the oven and divide the quinoa filling among them, packing it gently into the cavities and mounding it slightly on top. Return the pan to the oven and bake for 12 to 15 minutes, until the zucchini is tender when pierced with a knife and the tops are hot with a few browned spots. If you want more color, broil for 1 minute at the end, watching closely.
- Rest and serveLet the boats rest for 5 minutes before serving so the filling settles and the zucchini finishes softening from residual heat. Transfer to plates with a spatula, making sure to keep the filling intact. Serve hot with any juices from the pan spooned over the top for extra flavor.
Before you cook
What to get ready
The recipe's baking dish, saucepan or skillet for the filling, oven mitts and thermometer.
Leave enough zucchini flesh to support the shells and cook quinoa before filling.
If something needs adjusting
Boats collapse around the filling
Avoid scooping too deeply or overbaking the shells; fill them without packing tightly.
A larger batch heats unevenly
Use a second shallow dish rather than making a much deeper casserole. Check the center, not only the bubbling edges, before serving.
Store for later
Portion the cooked casserole into shallow containers for prompt chilling. Reheat the center to 165°F, covering if the topping browns too soon.
Refrigerate perishables within 2 hours, or 1 hour above 90°F. Keep the fridge at 40°F or below; use refrigerated leftovers within 3–4 days. USDA storage and reheating guidance.
Make the ingredients go further
Chop usable scooped zucchini into the filling instead of throwing it away.
Next use for your ingredients: Pasta with zucchini →
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Cooking notes updated October 24, 2026. How we create recipes.
Tips, swaps and questions
A little kitchen know-how
For the best texture, scoop the zucchini lightly and roast the shells before filling. If you hollow them too deeply, they can collapse; if you skip the par-roast, the finished boats often release more water. Crumble the feta at the end so it stays distinct instead of melting into the quinoa.
Make it work for you
You can swap feta for 2 oz grated mozzarella if you want a milder, stretchier finish, but the filling will be less salty and less tangy, so keep the lemon juice. If you use cooked brown rice instead of quinoa, the mixture will be heavier and may need a little less moisture in the skillet.
Use more of your cherry tomatoes and yellow onion in baked cod with tomatoes.
Can I make the quinoa filling ahead of time?
Yes. Cook the quinoa and make the vegetable filling up to 3 days ahead, then refrigerate them separately in sealed containers. Assemble and bake the zucchini right before serving so the shells stay firm and do not shed excess liquid. Reheat leftovers to 165 F.
Times are estimates. Check ingredients for allergens. For safe temperatures and storage, see FoodSafety.gov.