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Overhead photo with two stuffed acorn squash halves on a blue platter
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Vegetarian Stuffed Acorn Squash with Quinoa and Lentils

This stuffed acorn squash recipe is everything you want in a fall dish—warm, hearty, and rustic. Each squash half is filled with a flavorful gluten-free quinoa and lentil stuffing. Cheese is totally optional, but a sprinkle on top makes it extra delicious. Serve it as a vegetarian main or an impressive side dish that everyone will love.
Course Main Course
Cuisine American
Diet Gluten Free, Vegetarian
Keyword acorn squash, Stuffed squash
Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Servings 4
Calories 252kcal

Ingredients

  • 1 large acorn squash or two smaller squash
  • 1 cup cooked quinoa
  • ½ cup cooked lentils I use Puy or beluga lentils
  • 1 teaspoon olive oil
  • 1 small yellow onion finely diced
  • 1 stalk celery finely diced
  • ½ cup cheddar cheese shredded
  • 3 Tablespoons tomato paste
  • ¼ cup sunflower seeds toasted

Instructions

  • Preheat oven to 200°C / 400°F.
  • Split your squash in half and scoop out the seeds and stringy bits.
    1 large acorn squash
  • Rub the squash with a bit of oil, and place the squash cut side down on a sheet pan lined with parchment paper. Roast for 15 - 20 min, until just barely tender.
  • While squash is roasting, prepare the stuffing.
  • Heat a small frying pan over medium-high heat. Add a teaspoon of olive oil, and sauté the onions and celery for about 5 minutes, until the onion is translucent. Remove from the heat.
    1 small yellow onion, 1 stalk celery, 1 teaspoon olive oil
  • Combine quinoa, lentils, onions and celery, cheese, tomato paste, and sunflower seeds to a large bowl, and give everything a good stir to combine.
    1 cup cooked quinoa, ½ cup cooked lentils, ½ cup cheddar cheese, 3 Tablespoons tomato paste, ¼ cup sunflower seeds
  • When the squash is just becoming tender remove from the oven and cool slightly, just until you can handle it.
  • Spoon the filling in and press firmly in with your hands, making a mound of stuffing over the squash.
  • Return the squash to the sheet pan (or use a baking dish if your squash is tippy), stuffing side up, and return to the oven for an additional 15-20 minutes.
  • Squash is ready when it is fully tender and the stuffing is nice and crispy on top.
  • Serve warm or at room temperature.

Notes

  • Nutrition values are an estimate only.
  • The squash can be par-roasted a day or two in advance and stuffed before baking.
  • Stuffed squash can be kept in the fridge for 1-2 days and baked from cold - just add 10 minutes to the second roasting time. 
  • Leftover stuffing can be baked in a buttered ramekin, kept in the fridge for 3-5 days, or frozen for up to 3 months. 

Nutrition

Calories: 252kcal | Carbohydrates: 32g | Protein: 11g | Fat: 10g | Saturated Fat: 4g | Cholesterol: 15mg | Sodium: 199mg | Potassium: 786mg | Fiber: 7g | Sugar: 4g | Vitamin A: 765IU | Vitamin C: 16mg | Calcium: 169mg | Iron: 3mg