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Vegetable casserole with layered potatoes, carrots, zucchini, peppers, and tomato herb sauce served in a rustic baking dish.Vegetable casserole with layered potatoes, carrots, zucchini, peppers, and tomato herb sauce served in a rustic baking dish.

Layered Vegetable Casserole

Layered Vegetable Casserole is a wholesome French-inspired slow cooker recipe featuring layers of potatoes, carrots, zucchini, peppers, and a flavorful tomato herb sauce. This hearty vegan casserole is easy to prepare and slowly cooks into a comforting family meal packed with vegetables.
Couverts4 servings
Preparation 20 minutes
Preparation time:6 hours
Low Setting 12 hours
estimated costs pp $2.20
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Equipment

  • Slow cooker or large casserole dish
  • Knife
  • Cutting board
  • Mixing bowl
  • Measuring cups
  • Wooden spoon

Ingredients

  • 6 medium potatoes thinly sliced
  • 1 large onion sliced
  • 2 carrots sliced
  • 1 green bell pepper sliced
  • 1 zucchini sliced

Optional Vegetables

  • 1 cup mushrooms sliced
  • 1 cup broccoli florets
  • 1 cup green beans trimmed

For the Sauce

  • 2½ cups tomato sauce
  • ¼ cup low-sodium tamari
  • 1 teaspoon dried thyme
  • 1 teaspoon dry mustard
  • 1 teaspoon dried basil
  • 2 teaspoons chili powder
  • ½ teaspoon ground cinnamon
  • ⅛ teaspoon dried sage
  • 2 tablespoons dried parsley flakes

Instructions

  • Lightly grease the slow cooker or casserole dish.
  • Layer the potatoes, onion, carrots, green bell pepper, zucchini, and any optional vegetables in the order listed.
  • Whisk together the tomato sauce, tamari, thyme, dry mustard, basil, chili powder, cinnamon, sage, and parsley.
  • Pour the sauce evenly over the vegetables.
  • Cover and cook on HIGH for 6 hours or LOW for 12 hours until the vegetables are tender.
  • Serve hot with the cooking juices spooned over the vegetables.

Notes & Wine Advice

Recipe Notes

Slice all vegetables to a similar thickness so they cook evenly.
Feel free to add mushrooms, broccoli, green beans, or other seasonal vegetables to make the casserole even heartier.
For a richer flavor, sprinkle fresh herbs over the casserole just before serving.
This casserole reheats beautifully and is ideal for meal prep or freezing in individual portions.

Wine Advice

A crisp Sauvignon Blanc pairs beautifully with the tomato and herb flavors.
A dry Rosé is another refreshing choice that complements the roasted vegetables.

Nutrition values

Calories: 180 kcal | Carbohydrates: 30 g | Protein: 5 g | Fat: 6 g | Saturated Fat: 1 g | Sodium: 360 mg | Sugar: 8 g
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Course; Casserole / Comfort Food / Vegetables
Cuisine; French
Season: Autumn / Winter
Diets; Diabetic / Gluten-Free / Vegan / Vegetarian
Occasions Family Dinner