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Cauliflower + Butternut Squash Bake with Caramelized Onions in a White Baking Dish
Cauliflower + Butternut Squash Bake
Prep Time
20 mins
Cook Time
1 hr
Total Time
1 hr 20 mins

Cauliflower and butternut squash are equally tender vegetables when roasted and pureed. Here, I'm layering them with caramelized red onions and topping it all off with toasted quinoa.

Course: Dinner
Cuisine: American
Keyword: cauliflower, butternut squash
Servings: 6 people
Calories: 129 kcal
Author: Amie
  1. Preheat the oven to 400 degrees F. Lightly oil an 8 x 11 inch baking dish; set aside. Prepare one large rimmed baking sheet with parchment paper.

  2. Slice squash in half lengthwise and drizzle with 1 Tablespoon olive oil using your hands to coat the squash. Add more oil if needed. Sprinkle with 1/4 teaspoon sea salt and pepper and place cut-side down on the prepared rimmed baking sheet. Make sure to spread out the squash so it's not touching. Roast for 60 minutes or until tender.

  3. In a large skillet over medium heat, add the remaining 1 Tablespoon olive oil with the red onions and 1/2 teaspoon sea salt. Caramelize for about 30-35 minutes lowering heat as needed until the onions are very tender and dark golden brown. Set aside.

  4. Meanwhile, steam the cauliflower florets on the stovetop over high heat in a steamer basket until very tender, about 25 minutes. Remove from the heat, finely chop the steamed florets with a sharp knife and set aside.

  5. In a high-speed blender, add the steamed cauliflower, water, sunflower seeds, 3/4 tsp salt and pepper. Puree until very smooth. Season to taste.

  6. To toast the quinoa for a topping (optional): Add the quinoa to a large dry skillet, stirring or shaking the pan occasionally, until the quinoa is lightly dried out and toasty, about 12 minutes or until you hear the quinoa popping. Set aside.

  7. Remove the butternut squash from the oven and set aside to cool for 5 minutes. Scoop out the flesh with a large spoon and discard the skin.

  8. Transfer the squash flesh into the base of the prepared baking dish spreading it out to cover the entire surface. Layer the caramelized onions on top followed by the top layer of puréed cauliflower. Transfer to the oven and bake for another 20 minutes or until lightly golden brown around the edges. Remove from the oven and set aside to cool for 5 minutes before serving. Sprinkle the toasted quinoa on top, if desired. Scoop with a large spoon and serve warm.

  9. Store leftovers in a sealed glass container in the refrigerator for up to 4 days or in the freezer for up to 1 month.

Nutrition Facts
Cauliflower + Butternut Squash Bake
Amount Per Serving
Calories 129 Calories from Fat 27
% Daily Value*
Fat 3g5%
Saturated Fat 1g6%
Polyunsaturated Fat 0.4g
Monounsaturated Fat 2g
Sodium 49mg2%
Potassium 904mg26%
Carbohydrates 25g8%
Fiber 6g25%
Sugar 6g7%
Protein 4g8%
Vitamin A 13295IU266%
Vitamin C 95mg115%
Calcium 104mg10%
Iron 2mg11%
* Percent Daily Values are based on a 2000 calorie diet.