Vegan Cauliflower Rice and Broccoli Gratin

A gratin is a dish that’s typically loaded with cheese (and butter or cream) and heaps of crispy breadcrumbs.

But if you’re hoping to keep a trim waistline, or avoid dairy and gluten, then this classic dish is basically off-limits. (Cue sad face.)

Thankfully, with a bit of creativity, we turned traditional rice and broccoli gratin into a delicious, “cheesy” casserole that is both dairy and gluten-free.

The cheesy component in this recipe comes courtesy of nutritional yeast, which is the holy grail for vegan cheese lovers. It has a nutty and cheesy flavor which makes it a wonderful dairy-free cheese substitute.

And it’s bright yellow flakes are chock-full of good stuff, like B-complex vitamins (including B12). We blended it with cashews to give our “cheese” more creaminess and texture.

The end result is a delicious, vegan-friendly cheese that can be sprinkled on any dish you like!

Instead of standard white rice, we swapped in cauliflower rice, a less carby alternative, that helps to pack even more veggies into this broccoli gratin. You can make cauliflower rice by processing or finely chopping cauliflower florets, or buy it pre-chopped in most grocery stores.

Cauliflower is a magical vegetable that never ceases to amaze me. Besides rice, this humble vegetable can transform itself into almost anything. Nachos, pizza, pasta casserole… you name it: Cauliflower’s done it. In this dish, it also stands in for breadcrumbs.

Vegan Cauliflower Rice and Broccoli Gratin

This recipe makes eight substantial servings, so it’s great for dinner parties or potlucks. If you won’t need so much food all at once, you can halve the recipe or divide the mixture between two smaller baking dishes.

That way, you could bake one dish to eat right away, and freeze the other for another day (thaw it overnight in the fridge before baking).

Vegan Cauliflower Rice and Broccoli Gratin
5 from 1 vote
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Vegan Cauliflower Rice and Broccoli Gratin

With a bit of creativity, we turned traditional rice and broccoli gratin into a delicious, "cheesy" casserole that is both dairy and gluten-free.

Course Main Course
Cuisine American
Keyword broccoli gratin
Prep Time 20 minutes
Cook Time 42 minutes
Total Time 1 hour 2 minutes
Servings 8 servings, about ¾ cup each
Calories 234 kcal
Author Kirsten Morningstar

Ingredients

  • Nonstick cooking spray
  • ¾ cup raw cashews
  • ¼ cup + 3 Tbsp. nutritional yeast divided use
  • ¾ tsp. sea salt or Himalayan salt divided use
  • ¼ tsp. garlic powder
  • 1 medium head cauliflower cut into bite-sized pieces (or 3 cups cauliflower rice)
  • 2 Tbsp. olive oil divided use
  • 4 cloves garlic finely chopped
  • ¼ cup arrowroot gluten-free
  • 2 cups unsweetened almond milk
  • ½ tsp. ground black pepper divided use
  • 2 cups cooked coarsely chopped broccoli
  • 2 Tbsp. finely chopped fresh parsley (for garnish; optional)

Instructions

  1. Preheat oven to 375º F.
  2. Lightly coat a 13 x 9-inch baking dish with spray. Set aside.
  3. To make vegan cheese, place cashews, 3 Tbsp. nutritional yeast, ¼ tsp. salt, and garlic powder in food processor; pulse until mixture forms a fine meal. Set aside.
  4. Place half of cauliflower in food processor; pulse until cauliflower is chopped into pieces about the size of rice. Repeat with the other half. Set aside.
  5. Heat 1 Tbsp. oil in medium nonstick skillet over medium-high heat.
  6. Add garlic; cook, stirring frequently, for 1 minute.
  7. Add arrowroot; cook, whisking frequently, for 1 minute.
  8. Slowly add almond milk; cook, whisking frequently, for 2 minutes, or until well blended. Sauce may be a little lumpy.
  9. Place almond milk mixture, remaining ¼ cup nutritional yeast, ½ cup vegan cheese, ¼ tsp. salt, and ¼ tsp. pepper in blender, in small batches; cover with lid and a kitchen towel. Blend until smooth.
  10. Return almond milk mixture to same skillet; cook, over medium-low heat, stirring frequently, for 2 to 3 minutes, or until sauce thickens. Remove from heat if sauce gets too thick. Set aside.
  11. Heat remaining 1 Tbsp. oil in large nonstick skillet over medium-high heat.
  12. Add cauliflower and broccoli; cook, stirring frequently, for 2 to 3 minutes.
  13. Combine cauliflower mixture, ¼ cup vegan cheese, remaining ¼ tsp. salt, and remaining ¼ tsp. pepper in a large bowl; mix well.
  14. Add almond milk mixture; mix well. Place in prepared baking dish.
  15. Bake, covered with foil, for 20 to 25 minutes, or until bubbly.

Recipe Notes

  • Cauliflower rice may be found at your favorite grocery store.
  • If sauce seems too thick after cooking, add 1 Tbsp. unsweetened almond milk; mix well. Keep adding almond milk until sauce is the right consistency.

The Nutrition Facts box below provides estimated nutritional information for this recipe.

Nutrition Facts
Vegan Cauliflower Rice and Broccoli Gratin
Amount Per Serving (0.75 cup)
Calories 234 Calories from Fat 117
% Daily Value*
Total Fat 13g 20%
Saturated Fat 2g 10%
Cholesterol 24mg 8%
Sodium 384mg 16%
Total Carbohydrates 24g 8%
Dietary Fiber 6g 24%
Sugars 4g
Protein 10g 20%
* Percent Daily Values are based on a 2000 calorie diet.

Tips:

  • Cauliflower rice may be found at your favorite grocery store.
  • If sauce seems too thick after cooking, add 1 Tbsp. unsweetened almond milk; mix well. Keep adding almond milk until sauce is the right consistency.

Vegan Cauliflower Rice and Broccoli Gratin

Photographs by Anguel Dimov and Brianne B of Evergreen Kitchen