Sweet Potato & Cauliflower Casserole

BY : PUBLISHED : November 30th, 2014 UPDATED: August 17th, 2021

Sometimes, nothing is quite as comforting as a freshly baked, warm casserole made from scratch. This is a recipe that features easy ingredients such as sweet potatoes, cauliflower, and vegetable broth with a delightful red pepper cashew cream sauce. Cashews are something we always have on hand because they are so versatile, and we buy them in bulk to save on money. This recipe does take some time to prepare, but it is well worth it and if you’re lucky you might have some leftovers for the next day. To make this recipe extra colorful, you can use a purple cauliflower that the kids and adults alike will be sure to love!

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Sweet Potato & Cauliflower Casserole

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Prep Time 50 mins
Cook Time 50 mins
Total Time 1 hr 40 mins
Course Dinner
Servings 6


  • 1 cup raw cashews, soaked beforehand
  • 2 red peppers, seeded and cut into quarters
  • 2 tablespoons extra virgin olive oil
  • 1 cup vegetable broth
  • 1/4 cup water
  • 1 1/2 teaspoons paprika
  • 1 medium sweet potato, thinly sliced
  • 2 shallots, finely sliced
  • 2 cups cauliflower
  • salt and pepper to taste
  • Fresh cilantro and parsley for garnish


  • Preheat the oven to 400ºF, and slice the red peppers into quarters. Drizzle and coat with the olive oil and sprinkle a little salt on top. Cook in the oven for 45 minutes, or until the skin of the peppers is black and the peppers are nice and soft. After taking these out of the oven let them cool. Then remove and throw away the skin of the peppers.
  • Put the cashews, roasted peppers, vegetable broth, water, paprika, and pepper into a food processor or high-power blender. Turn on and keep mixing until everything is smooth with no clumps. Taste and add any salt if necessary.
  • Once your sauce is made, preheat the oven to 375ºF. Cut up your cauliflower, shallots, and sweet potato. I used a mandolin for the potato which worked really well to slice it thinly. Once everything is ready, you can start putting the casserole together.
  • Using a good-sized and oven-safe casserole dish, start by layering the bottom of the dish with some of the red pepper cashew cream sauce, enough to coat the bottom but not too much. Next you will do a layer of sweet potatoes and some of the shallots, then a layer of the sauce and a layer of the cauliflower. Repeat until the dish is filled and you’ve used all the ingredients. Make sure that your top layer is the sauce and then it is ready to go in the oven.
  • Cover with a lid or some aluminum foil and bake for about 45-50 minutes if you have a large, rectangular dish. Cook until the vegetables have softened, and if you’d like you can even uncover the dish and broil the casserole for about 10 minutes to brown the top of it.
  • Take out of the oven and garnish with the cilantro and parsley, then cut to serve.
Keyword casserole, comfort food, fall, fall foods, roasted red peppers, sweet potato
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