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Paleo Zucchini Gratin Casserole

Paleo Zucchini Gratin Casserole is healthy comfort food at it's very best. This hearty Whole30-friendly dish is creamy, "cheese-y" and absolutely delicious despite being dairy-free! Whether you're serving this elegant casserole as a side dish or the main course, it will surely have your family going in for seconds. 
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Course: Brunch, Holiday Side Dish, Main Course, Side Dish
Cuisine: American
Keyword: Dairy-Free Zucchini Au Gratin, Gluten-Free Zucchini Casserole, Keto Zucchini Au Gratin, Whole30 Zucchini Recipe
Prep Time: 5 minutes
Cook Time: 35 minutes
Total Time: 40 minutes
Servings: 6
Calories: 436kcal

Ingredients

  • 2 pounds zucchini
  • 2 tablespoons ghee
  • ½ cup mayonnaise store-bought or homemade
  • ¼ cup nutritional yeast
  • 1 egg
  • 2 tablespoons dried onion flakes
  • 1 teaspoon salt
  • ½ teaspoon garlic powder
  • ½ teaspoon onion powder
  • ½ teaspoon parsley (dried)
  • ¼ teaspoon celery seed
  • ¼ teaspoon pepper
  • 1 cup Paleo-friendly crackers i.e. Simple Mills Rosemary & Sea Salt Almond Flour Crackers

Instructions

  • Preheat oven to 375°. Wash and dry zucchini. Trim ends (discard) and slice the rest of the zucchini into ¼" thick rounds.
  • Melt 2 tablespoons ghee over medium heat in a large oven-safe skillet (a cast-iron works great).
  • While the ghee melts, prepare the sauce. In a medium bowl, whisk together mayonnaise, nutritional yeast, egg, dried onion flakes, salt, garlic powder, onion powder, parsley, celery seed and pepper. Whisk until smooth and creamy.
  • Once the ghee has melted, add sliced zucchini to the skillet and cook until tender-crisp (4 to 5 minutes). Zucchini should still have a bite to them. Remove skillet from heat.
  • Pour sauce into the skillet with the zucchini and toss gently to combine. Bake in preheated oven for 10 minutes.
  • Meanwhile, break crackers into crumbs. After 10 minutes, remove the skillet from the oven, sprinkle cracker crumbs on top and return to the oven for an additional 20 minutes or until the cracker crumbs are golden brown and toasted. Paleo Zucchini Gratin Casserole is best served immediately. ENJOY! :)

Notes

To make this casserole egg-free and Vegan, use a plant-based buttery spread in place of ghee, egg-free Vegan mayo in place of regular mayo and a flax egg or a Vegan egg substitute in place of the egg.

Nutrition

Calories: 436kcal