Creamy White Bean & Root Vegetable Gratin with Fall Herbs

Creamy White Bean & Root Vegetable Gratin with Fall Herbs

This layered gratin blends earthy white beans, roasted root vegetables, and a silky herb-infused cream sauce scented with thyme, rosemary, and sage. Baked until bubbling and golden, it delivers rich, comforting flavors with a whisper of forest air and woodsmoke—like a walk through an herb garden on a crisp October morning.
Course Main Course, Side Dish
Cuisine Rustic European / Autumn Comfort Food
Prep Time 25 minutes
Cook Time 40 minutes
Total Time 1 hour 5 minutes
Servings 6
Calories 377kcal

Ingredients

Vegetables & Beans

  • 2 medium parsnips thinly sliced
  • 1 sweet potato peeled and thinly sliced
  • 1 large carrot peeled and thinly sliced
  • 1 can 15 oz white beans (cannellini or great northern), drained and rinsed

Herb Cream Sauce:

  • 1 1/2 cups heavy cream or oat/soy cream for vegan option
  • 2 garlic cloves minced
  • 2 tbsp fresh thyme leaves
  • 1 tbsp chopped fresh rosemary
  • 1 tbsp finely chopped fresh sage
  • 1 tbsp olive oil or butter
  • Salt & black pepper to taste
  • Optional: pinch of nutmeg or a drizzle of white wine

Toppings;:

  • 1/2 cup grated Gruyère or aged cheddar or vegan cheese shreds
  • 1/4 cup breadcrumbs or crushed nuts e.g., hazelnuts or walnuts
  • Drizzle of olive oil

Instructions

  • Preheat oven to 375°F (190°C).
  • Make the Herb Cream Sauce: In a small saucepan, heat olive oil or butter. Sauté garlic until fragrant. Add cream, thyme, rosemary, and sage. Simmer gently for 5 minutes, then season with salt, pepper, and optional nutmeg or wine. Remove from heat.
  • Assemble the Gratin: In a greased baking dish, layer sweet potatoes, parsnips, carrots, and white beans. Pour the herb cream sauce evenly over the top.
  • Add Toppings: Sprinkle with cheese and breadcrumbs or crushed nuts. Drizzle with olive oil.
  • Bake: Cover with foil and bake for 25 minutes. Uncover and bake for another 15–20 minutes until golden, bubbling, and tender.
  • Rest & Serve: Let sit for 10 minutes before serving to allow it to set.

Notes

Optional Additions:
  • Add sautéed mushrooms between layers for an umami boost
  • Sprinkle with fresh parsley or microgreens before serving
  • Serve with a crisp apple & walnut salad and crusty bread
 
Flavor Notes:
This dish is aromatic and creamy, with the resinous warmth of rosemary, the earthy bite of sage, and the soft floral lift of thyme. The roasted root vegetables and beans add richness and sweetness, while the topping gives it just the right crunch.
 
Vegetables & Beans with Herb Cream Sauce
(with heavy cream, Gruyère, and breadcrumbs; beans rinsed; no added table salt included)
Nutrition Facts (per serving — 1/6 recipe)
  • Calories: 377
  • Total Fat: 25.9 g
    • Saturated Fat: 15.1 g
    • Trans Fat: 0.08 g
  • Cholesterol: 77 mg
  • Sodium: 163 mg
  • Total Carbohydrate: 24.5 g
    • Dietary Fiber: 4.6 g
    • Total Sugars: 4.0 g
    • Includes Added Sugars: ~0 g (breadcrumbs may add trace)
  • Net Carbs: 19.9 g
  • Protein: 8.7 g
Key Minerals (per serving)
  • Calcium: 210 mg (≈16% DV)
  • Iron: 2.27 mg (≈13% DV)
  • Magnesium: 47 mg (≈11% DV)
  • Potassium: 534 mg (≈11% DV)