This High-Fiber Vegetable Tian Is Packed with Fall Flavors

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Layers of butternut squash, red onion, potato and beets combine to create this stunning casserole. A quick garlic-infused oil is brushed onto the vegetables to get savory flavor in every bite. Look for a butternut squash with a slender neck to produce even slices. If you want a stronger flavor, try swapping the Parmesan for Gruyère or Pecorino Romano.

  • Make this vegetable tian for a holiday spread and impress your guests. 
  • Potatoes, Brussels sprouts and butternut squash all add fiber to help with digestion. 
  • The garlic-infused oil is easy to make and imparts flavor quickly.
Ingredients for a fall vegetable tian including potatoes red onions squash beets olive oil cheese garlic seasoning and cooking spray

Photographer: Kelsey Hansen, Food Stylist: Annie Probst, Prop Stylist: Breanna Ghazali.

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Ingredients

Original recipe (1X) yields 8 servings

  • cup extra-virgin olive oil

  • 2 medium cloves garlic, thinly sliced

  • ¼ teaspoon crushed red pepper (optional)

  • 1 medium slender-necked butternut squash (2 pounds)

  • 2 small red onions (about 5 ounces each), peeled and sliced crosswise ⅛-inch thick

  • pounds Yukon Gold potatoes (about 5 medium), scrubbed and sliced crosswise ⅛-inch thick

  • 2 medium red beets (about 6 ounces each), trimmed, peeled and sliced crosswise ⅛-inch thick

  • ½ teaspoon ground pepper

  • ½ teaspoon plus  teaspoon salt, divided

  • ½ cup grated Parmesan cheese

  • teaspoons fresh thyme leaves

Directions

  1. Preheat oven to 375°F. Combine ⅓ cup oil, the sliced garlic and ¼ teaspoon crushed red pepper (if using) in a small skillet; cook over medium heat, stirring frequently, until the garlic begins to sizzle, about 3 minutes. Remove from heat.

    Garlic slices and seasonings in a saucepan on a stovetop

    Photographer: Kelsey Hansen, Food Stylist: Annie Probst, Prop Stylist: Breanna Ghazali.

  2. Cut the slender neck from the base of the squash (reserve the base for another use). Trim off the stem and peel the neck. Slice crosswise into ⅛-inch-thick rounds.

    A person slicing a butternut squash on a wooden cutting board squash slices in view

    Photographer: Kelsey Hansen, Food Stylist: Annie Probst, Prop Stylist: Breanna Ghazali.

  3. Coat a 2¼-quart round or oval baking dish with cooking spray. Arrange two-thirds of the squash, onion, potato and beet slices in an alternating, overlapping pattern around the edge of the dish. Arrange the remaining slices in a similar alternating pattern in the center.

    Sliced vegetables arranged in a circular pattern in a round baking dish

    Photographer: Kelsey Hansen, Food Stylist: Annie Probst, Prop Stylist: Breanna Ghazali.

  4. Brush the vegetables with the garlic oil, tucking the garlic slices between the layers. Sprinkle with ½ teaspoon each salt and pepper. Combine ½ cup Parmesan and 1½ teaspoons thyme in a small bowl and sprinkle over the top.

    A dish of sliced vegetables arranged in a layered pattern in an ovensafe dish topped with breadcrumbs

    Photographer: Kelsey Hansen, Food Stylist: Annie Probst, Prop Stylist: Breanna Ghazali.

  5. Cover tightly with foil and bake until the vegetables begin to soften, about 35 minutes. Uncover and continue to bake until the top is lightly browned and the vegetables are tender when pierced with a paring knife, 25 to 30 minutes. Sprinkle with the remaining ⅛ teaspoon salt. Serve warm or at room temperature.

    Recipe image of Fall Vegetable Tian.

    Photographer: Kelsey Hansen, Food Stylist: Annie Probst, Prop Stylist: Breanna Ghazali.

EatingWell.com, October 2025

Nutrition Facts (per serving)

249 Calories
11g Fat
35g Carbs
6g Protein
Nutrition Facts
Servings Per Recipe 8
Serving Size about ¾ cup
Calories 249
% Daily Value *
Total Carbohydrate 35g 13%
Dietary Fiber 5g 20%
Total Sugars 7g
Added Sugars 0g 0%
Protein 6g 11%
Total Fat 11g 14%
Saturated Fat 2g 11%
Cholesterol 5mg 2%
Vitamin A 622µg
Vitamin C 34mg 38%
Vitamin D 0µg
Vitamin E 3mg 20%
Folate 100µg
Vitamin K 9µg
Sodium 324mg 14%
Calcium 134mg 10%
Iron 2mg 12%
Magnesium 74mg 18%
Potassium 962mg 20%
Zinc 1mg 8%
Vitamin B12 0µg
Omega 3 0g

Nutrition information is calculated by a registered dietitian using an ingredient database but should be considered an estimate.

* Daily Values (DVs) are the recommended amounts of nutrients to consume each day. Percent Daily Value (%DV) found on nutrition labels tells you how much a serving of a particular food or recipe contributes to each of those total recommended amounts. Per the Food and Drug Administration (FDA), the daily value is based on a standard 2,000 calorie diet. Depending on your calorie needs or if you have a health condition, you may need more or less of particular nutrients. (For example, it’s recommended that people following a heart-healthy diet eat less sodium on a daily basis compared to those following a standard diet.)

(-) Information is not currently available for this nutrient. If you are following a special diet for medical reasons, be sure to consult with your primary care provider or a registered dietitian to better understand your personal nutrition needs.