1Preheat oven to 400 degrees F (200 degrees C). Lightly grease an 11x13-inch glass baking dish baking with olive oil.
2Melt 5 tablespoons butter in a saucepan over medium-low heat; cook until bubbling and beginning to brown, 2 to 3 minutes. Stir arrowroot flour into the butter until completely moistened; season with 1 teaspoon marjoram, salt, black pepper, and nutmeg.
3Pour almond milk over the arrowroot mixture, whisking continually to integrate. Bring mixture to a boil, stir ricotta cheese into the mixture until smooth, and immediately remove saucepan from heat.
4Pour about 1/3 of the ricotta mixture into the prepared baking dish and spread into an even layer. Layer about half the butternut squash, kale, and onion atop the sauce, respectively; top with about 1/2 of the ricotta mixture. Layer remaining squash, kale, and onion over the second layer of ricotta mixture and then cover with remaining ricotta mixture. Cover the dish tightly with aluminum foil.
5Bake in preheated oven until the squash is tender, about 30 minutes. Remove and discard aluminum foil.
6Mash the almond meal, nutritional yeast, 5 tablespoons butter, Parmesan cheese, 1/2 teaspoon marjoram, thyme, and sea salt together with a fork or pastry cutter; spread in a layer atop the gratin.
7Continue baking until the gratin is bubbling and the topping is browned, 5 to 10 minutes.
Footnotes
Cook's Notes:
Coconut oil is a suitable replacement for olive oil, if you prefer.
You can use 1/4 cup flaxseed meal in place of nutritional yeast.
Nutritional yeast resembles Parmesan cheese in flavor and looks light light brown flakes. It is nutrient-dense, as is flax meal; both are inexpensive and add a punch of flavor to the topping.
Watch dish closely when baking uncovered, as meal tends to burn easily.
Ingredients
8 servings
412 cals
2 teaspoons olive oil, or as needed
White Sauce:
5 tablespoons butter
3 tablespoons arrowroot flour
1 teaspoon dried marjoram
1/2 teaspoon salt
1/4 teaspoon freshly cracked black pepper
1/4 teaspoon ground nutmeg
2 cups almond milk
2 cups ricotta cheese
Filling:
1 small butternut squash, peeled and cut into bite-size pieces