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You are here: Home / Recipes / Side Dishes / Butternut Squash Gratin (low carb & gluten free)

Butternut Squash Gratin (low carb & gluten free)

Published September 9, 2019. Last updated July 12, 2020 by Lauren Vavala

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This Butternut Squash Gratin is made from scratch with all low carb and gluten free ingredients. Topped with almond flour “bread crumbs,” each serving has only 15 net carbs. This gratin is the perfect fall side dish recipe!

Close up of Butternut Squash Gratin in a white baking dish

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Butternut squash is my favorite fall vegetable. Yep, even more so than pumpkin! It’s just easier to find and work with, in my opinion.

I use it often in fall side dishes like in this Roasted Butternut Squash Risotto with Brussels Sprouts and in Roasted Butternut Squash and Brussels Sprouts Medley.

I don’t only use it in recipes with Brussels sprouts though. It’s also great with apples like in Butternut Squash Apple Flatbread and as the star of the show in Warm & Spicy Butternut Squash Soup.

In this recipe for Butternut Squash Gratin, butternut squash is, once again, the star of the show!

Why This Recipe Works

  • This is a low carb and gluten free recipe.
  • It’s family friendly and a great way to help your kids learn to love their veggies!
  • You can make this recipe ahead of time and bake it when needed. I like to prepare some of my dishes for holidays the night before. It really helps the big day go so much easier!

How to Make Butternut Squash Gratin

Prep!

Chop the shallot, mince the garlic, and strip the leaves off of the stems of thyme.

Preheat your oven to 400°F.

Create!

Sliced butternut squash layered in a white square casserole dish

Peel and slice the long neck part of the butternut squash into 1/4″ thick rounds and layer into the bottom of a medium size casserole dish. You can save the bottom bulb portion for another use.

Shallot, garlic, and thyme cooking in a black skillet

Melt 2 tablespoon of the butter over medium heat in a medium size skillet and add the shallot, garlic, and thyme. Cook for 2-3 minutes, or until the shallot is softened.

Cream sauce cooking in a black skillet over a white background

Stir in the heavy whipping cream, salt and pepper and cook for 1-2 minutes until hot and bubbly.

Slices of butternut squash in a white, square casserole dish topped with a cream sauce and herbs

Pour the hot cream mixture evenly over the butternut squash.

Butternut squash rounds topped with a cream sauce and Parmesan cheese in a white, square baking dish

Sprinkle on the Parmesan cheese.

Butternut squash rounds topped with a cream sauce and almond flour breadcrumbs in a white, square baking dish

Melt the remaining 1 tablespoon of butter and stir in the almond flour with a fork until it resembles crumbs. Spread the almond flour crumbs over the butternut squash.

Tip: if you’d like to lower the carb count even more, I have seen people use pork rinds as breadcrumbs. I refuse to use them, but more power to ya if you enjoy them!

Baked Butternut Squash Gratin in a white, square casserole dish

Cover and bake for 45 minutes, or until the squash is fork-tender and the crumb topping is lightly browned. Remove the cover and bake an additional 5-10 minutes to brown the crumbs more, if desired.

Present!

A serving of Butternut Squash Gratin on a small cream colored plate with a fork over a white background

Top with extra fresh thyme, if desired, and serve hot.

Tips and Techniques for the Best Butternut Squash Gratin

  • Try to find a butternut squash with a long neck. You’ll be able to get more slices and servings.
  • If you’re looking to lower the carb count in this recipe, I have seen some people use pork rinds as bread crumbs instead.
  • Store leftovers tightly covered in the refrigerator. Use within 3-5 days.

FAQ’s

  • What is gratin? Gratin is a dish that is topped with bread crumbs and/or cheese and baked until lightly browned.
  • Is butternut squash low carb? Yes, butternut squash is a lower carb vegetable. It has about 14 net carbs per 1 cup.
  • Is butternut squash keto? Butternut squash can be eaten on a keto diet. It does have a higher carb count than some other foods. Depending on your dietary needs it may or may not fit into your keto diet plan.

Other Recipes to Try

  • Keto Broccoli Casserole
  • Keto Mac and Cheese with Zoodles
  • Loaded Cauliflower Bites

Love this Butternut Squash Gratin recipe? Follow me on Pinterest, Instagram, and Facebook for more!

A serving of Butternut Squash Gratin on a small white plate over a white background
Print

Butternut Squash Gratin

This Butternut Squash Gratin is made from scratch with all low carb and gluten free ingredients. Topped with almond flour "bread crumbs," each serving has only 15 net carbs. This gratin is the perfect fall side dish recipe!
Course Side Dish
Cuisine American, Gluten Free, Low Carb, Vegetarian
Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Servings 6 servings
Calories 233kcal
Author Lauren Vavala

Ingredients

  • 1 large butternut squash * about 2 pounds
  • 1 tablespoon butter
  • 1 shallot * finely diced
  • 2 cloves garlic * minced
  • 1 tablespoon fresh thyme leaves
  • 1/2 cup heavy whipping cream
  • 1/2 teaspoon salt
  • 1/4 teaspoon pepper
  • 1/4 cup Parmesan cheese * I used shaved
  • 1 tablespoon butter
  • 1/2 cup blanched almond flour

Instructions

  • Preheat oven to 400°F.
  • Peel and slice the long neck part of the butternut squash into 1/4" thick rounds and layer into the bottom of a medium size casserole dish.
  • Melt 2 tablespoon of the butter over medium heat in a medium size skillet.
  • Add the shallot, garlic, and thyme. Cook until the shallot is just softened, about 2-3 minutes.
  • Stir in the heavy whipping cream, salt and pepper.
  • Pour the hot cream mixture evenly over the butternut squash.
  • Evenly sprinkle on the Parmesan cheese.
  • Melt the remaining 1 tablespoon of butter and stir in the almond flour with a fork until it resembles crumbs.
  • Spread the almond flour crumbs over the butternut squash.
  • Cover and bake for 45 minutes, or until the squash is fork-tender and the crumb topping is lightly browned. Remove the cover and bake an additional 5-10 minutes to brown the crumbs more, if desired.

Notes

Tips and Techniques for the Best Butternut Squash Gratin

  • Try to find a butternut squash with a long neck. You'll be able to get more slices and servings.
  • If you're looking to lower the carb count in this recipe, I have seen some people use pork rinds as bread crumbs instead.
  • Store leftovers tightly covered in the refrigerator. Use within 3-5 days.
 
** Nutritional information is an estimate and may vary.

Nutrition

Serving: 1g | Calories: 233kcal | Carbohydrates: 19g | Protein: 5g | Fat: 17g | Saturated Fat: 8g | Cholesterol: 40mg | Sodium: 274mg | Potassium: 476mg | Fiber: 4g | Sugar: 3g | Vitamin A: 13784IU | Vitamin C: 29mg | Calcium: 148mg | Iron: 2mg

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Filed Under: Gluten Free, Low Carb, Recipes, Side Dishes

Welcome, I'm Lauren!

Delicious Little Bites is where I share all types of recipes from appetizers to desserts. You will also find plenty of keto, gluten free, and vegetarian recipes here to help you put a delicious meal on the table every night that the whole family will love! Read More...

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