Slow Cooker Rutabaga Gratin with Millet and Gruyère | @naturallyella

Post sponsored by Crock-Pot® Brand/Mirum Shopper. See below for more details.

When it comes to holiday meals, I’m type-A (plan everything to the minute) cook. I have a schedule for every facet of the meal, to the point of where I have alarms in my phone. (In fact, I still have labels from last Thanksgiving. My morning alarm is called ‘beans and stuffing’ from last year’s Thanksgiving.) For those of you who are a bit more relaxed in your meal planning, this rutabaga gratin is the best kind of holiday meal recipe. Place everything in the slower cooker in the morning and let it cook while the rest of the meal is prepared. It’s rich, creamy, and the perfect addition to any holiday meal!

Gluten-Free Thanksgiving Menu


Vegetarian Gluten-Free Thanksgiving | @naturallyella

I love using holiday meals as a way to explore new recipes and ideas. This recipe is part of a three-recipe series focused on an easy, gluten-free Thanksgiving meal. The main dish is a beautiful radicchio salad that is not only delicious but beautiful in presentation (and vegan). The full meal includes:

Acorn Squash with Radicchio Lentil Salad
Pear Salad with Gorgonzola
Slow Cooker Rutabaga Gratin with Millet

Wine Pairing: Pine Ridge Chenin Blanc + Viognier 2014 for the overall meal. With the Rutabaga Gratin, this surprisingly dry white wine cuts through the creamy richness of the gratin with bright notes of citrus and ripe honeydew melon.


Slow Cooker Rutabaga Gratin with Millet

  • Author: Erin Alderson
  • Prep Time: 15 minutes
  • Cook Time: 240 minutes
  • Total Time: 255 minutes
  • Yield: 6 servings
  • Category: Side Dish


A perfect slow cooker dish, this rutabaga gratin can be started before all your guest arrive and be ready to serve when the rest of dinner is ready. 


  • 1 cup whole milk
  • 1/4 cup mascarpone
  • 1 tablespoon unsalted butter
  • 1 to 2 medium rutabaga (cubed 1/2 inch dice or small wedges (about 4 cups))
  • 1/2 cup uncooked millet
  • 1/2 teaspoon salt
  • 1 teaspoon pepper
  • 1 teaspoon dried thyme
  • 1 teaspoon garlic powder
  • 1 cup low-sodium vegetable broth
  • 1 cup shredded gruyere (divided)
  • Fresh parsley (for topping)
  • Fresh chives (for topping)


  1. In a small bowl, whisk together milk and mascarpone. Melt butter in Crock-Pot® slow cooker. Add rutabaga, millet, salt, pepper, thyme, and garlic powder.
  2. Pour in milk and mascarpone mixture along with the vegetable broth. Add 1/2 cup of shredded gruyere. Mix well and cover. Set Crock-Pot® slow cooker to cook on high for 4 hours or low to cook for 6 hours.
  3. With 30 minutes remaining, sprinkle remaining gruyere on top of gratin. Cover and let finish cooking. Serve with fresh chopped parsley and chives.


Tips & Tricks: Be sure to chop the rutabaga into small cubes so they cook through. Larger pieces will result in still crunchy rutabaga when the millet has absorbed all the liquid.

Stock up: get the pantry ingredients you will need: millet, butter


  • Calories: 250
  • Sodium: 393.8
  • Fat: 13.3
  • Carbohydrates: 23.4
  • Protein: 10.2
  • Cholesterol: 39.6

Step by Step

Rutabaga Gratin


Since this recipe is cooking for some time in the slow cooker, you want to pick vegetables, grains, and cheese that will hold up to heat throughout the cooking period. Millet is perfect for this rutabaga gratin because it becomes creamy while not fully losing its texture.

ROOT VEGETABLES: Try this gratin with sweet potatoes instead of rutabaga.

GRAINS: Can’t find millet? Swap it for another quick cooking grain such as quinoa (to keep it gluten-free) or bulgur or freekeh.

CHEESE: Change up your cheese flavors! Try this gratin with cheddar, swiss, or havarti instead.

Slow Cooker Rutabaga Gratin | @naturallyella


Disclosure: This recipe was created in partnership with Crock-Pot® Brand and Mirum Shopper. All thoughts and opinions are my own. It’s content like this that helps me keep this site running to provide the vegetarian recipes you see every week.