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Squash Au Gratin recipe. A cozy grain-free, dairy-free casserole full of Fall butternut squash and zucchini, with plantain chip toppings.
In the last few weeks, I have realized that I need more “sides” in my life. More creative options and recipes for side dishes, that is.
I know that plain veggies will always be great as a side dish, but what if you want plain veggies, a meat, PLUS a healthy something else on your plate? Like a veggie casserole, perhaps? This Squash Au Gratin is a creamy yet non-dairy paleo dish made with zucchini, yellow squash, and butternut squash, and topped with crumbled plantain chips… I mean, does that not sounds like the perfect side dish for Fall?!
Table of Contents
Ingredients:

- zucchini
- squash
- butternut squash
- white onion
- garlic
- coconut flour
- coconut cream
- salt and pepper
- nutmeg
- dried thyme
- chicken broth/stock
- crushed/crumbled plantain chips
Step by step instructions

Step 1: I cut the butternut squash into 1/2 inch slices, removed the peel, and then halved and quartered each slice. Then, I sliced each of these pieces in half, which left me with 1/4 inch thick pieces. I microwaved these pieces for 5 minutes so that they wouldn’t take forever to cook.

Step 2: Then, I made a scrumptious creamy Paleo sauce made out of of onions, garlic, coconut flour, coconut cream, salt, pepper, nutmeg, thyme and chicken broth.

Step 3: Then, I took 1/3 of the sliced zucchini, sliced yellow squash and the microwaved butternut squash and put them into a pan.

Step 4: I topped them with 1/2 cup of the creamy sauce and repeated this step until everything was done.

Step 5: Then I baked the squash dish at 400 degrees for 35 minutes, broiled it for a bit, and removed it. I topped the dish with crumbled plantain chips.

Step 6: Serve.

Other squash recipes you’ll love:
Did you try this recipe? Please leave me a ⭐ review below!
Squash Au Gratin (Paleo, GF)

Ingredients
- 1 zucchini, , sliced
- 1 yellow squash, , sliced
- 1/2 of a small butternut squash, ( I used 1/2 of a 1.72 lb butternut squash)
- 1 Tbs olive oil
- 1/2 cup of diced white onion
- 2.5-3 Tbs diced garlic
- 2 Tbs coconut flour, , divided (I like Nutiva)
- 1 cup coconut cream, (I used Savoy because it has no preservatives and tastes best)
- 1 tsp salt
- 1/2 tsp ground black pepper
- 1/4 tsp ground nutmeg
- 1/2 tsp dried thyme
- 1/2 cup chicken broth/stock
- 3/4 cup of crushed/crumbled plantain chips, (Trader Joes brand is my favorite, and Paleo)
Instructions
- Preheat your oven to 400 degrees.
- Cut 1/2 inch slices of your butternut squash, then cut off the outer skin from each slice. Then cut these slices in half and quarters. Slice each quartered piece in half (this makes it easier to get 1/4 inch slices of butternut squash). I ended up with 2 cups of sliced and quartered pieces of butternut squash. Then, put the butternut squash into a microwave safe bowl. Pour 1 cup of water into the bowl and microwave for 5 minutes. Strain and set aside.
- Next, sauté the diced white onion and diced garlic in 1 Tbs of olive oil in a pan/pot for about 4 minutes over medium heat. Add 1 Tbs of coconut flour to the onions and garlic and mix.
- Then, add 1 cup of coconut cream to the pot and mix. Add the salt, black pepper, nutmeg, and thyme to the pot, mix, and cook for 5 minutes. Add 1/2 cup of coconut broth or stock and 1 Tbs of coconut flour to the pot, mix, and cook for another 5 minutes. Then increase the heat to medium high and let the mixture bubble for 3 minutes, while mixing often, and set aside.
- Next, grease a glass dish, mine was 8in x 8 in. Put 1/3 of the sliced zucchini, sliced yellow squash and sliced butternut squash into the dish. Top with 1/2 cup of the sauce, smoothing it around to touch all of the squash. Then add then next 1/3 of the sliced zucchini, sliced yellow squash and sliced butternut squash into the pan and top it again with 1/2 cup of the sauce. Repeat this step with the remaining squash and sauce.
- Cook in the oven for 35 minutes. Then, broil at 500 for 2-3 mins, and remove from the oven. Top the whole dish with with crushed plantain chips, let cool, and serve.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.





Mouthwatering pictures! I can’t wait to try this recipe.
Thank you! 🙂 🙂