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Biscuit Vegetable Pot Pie Casserole Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.9 from 378 reviews
  • Author: Lisa
  • Prep Time: 40 minutes
  • Cook Time: 30 minutes
  • Total Time: 1 hour 10 minutes
  • Yield: Serves 8
  • Category: Main Dish
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

A comforting Biscuit Vegetable Pot Pie Casserole featuring a rich vegetable filling simmered in a creamy broth and topped with homemade fluffy biscuits baked to golden perfection. This hearty, vegetarian dish combines tender mixed vegetables with a buttery biscuit crust for a delicious, satisfying meal perfect for family dinners or cozy gatherings.


Ingredients

Scale

Biscuits

  • 2 cups (250g) all-purpose flour (spooned & leveled), plus extra for hands
  • 1 Tablespoon baking powder
  • 1/2 teaspoon salt
  • 6 Tablespoons (85g) unsalted butter, cold and cubed
  • 1 cup + 2 Tablespoons (270ml) whole milk, divided

Filling

  • 1/4 cup (4 Tbsp; 56g) unsalted butter
  • 1 cup (130g) diced yellow onion (1/2 of a large onion)
  • 1 cup (130g) sliced or diced carrots (12 large carrots or a handful of baby carrots)
  • 1 cup (120g) sliced or diced celery (23 stalks)
  • 1 cup (120g) roughly chopped mushrooms
  • 34 garlic cloves, minced
  • 1/3 cup (42g) all-purpose flour (spooned & leveled)
  • 1 teaspoon salt
  • 1/2 teaspoon fresh ground pepper
  • 2 teaspoons fresh thyme leaves (or 1 teaspoon dried)
  • 2 cups (480ml) vegetable broth
  • 1/2 cup (120ml) whole milk
  • 2 cups (about 300g or 10 ounces) mixed vegetables (such as frozen peas, frozen or fresh broccoli and/or cauliflower florets)
  • 2 Tablespoons chopped fresh parsley (or 2 teaspoons dried)

Instructions

  1. Make the biscuit topping: Whisk the flour, baking powder, and salt together in a large bowl or use a food processor. Add the cold butter and cut into the dry ingredients with a pastry cutter or pulse several times in the processor until coarse crumbs form. Add 1 cup (240ml) milk (reserve the rest for brushing), and stir or pulse until dough comes together. Adjust with additional milk or flour if needed. With floured hands, shape dough into 8 or 9 one-inch-thick discs. Place on a lined plate or baking pan, cover tightly, and refrigerate until ready to use or for up to 2 days.
  2. Prepare the filling: Melt butter in a large skillet or oven-safe pan over medium heat. Add diced onion, carrots, celery, mushrooms, and minced garlic. Cook, stirring occasionally, for 5 minutes until vegetables soften and release liquid. Stir in flour, salt, pepper, and thyme until the flour absorbs all the liquid. Add vegetable broth and 1/2 cup (120ml) milk, then simmer for 7–9 minutes until mixture thickens into a soup-like consistency. Stir in mixed vegetables and parsley, then remove from heat. Adjust seasoning as desired and let cool for 5 minutes.
  3. Preheat the oven: While filling cools, preheat oven to 400°F (204°C).
  4. Assemble the casserole: Pour the filling into a greased 2.5- or 3-quart baking dish or a 9-inch deep pie dish. Arrange chilled biscuit discs tightly on top of the filling. Brush the biscuit tops with the remaining 2 Tablespoons (30ml) milk.
  5. Bake the pot pie: Bake at 400°F for 25 minutes. Then increase oven temperature to 425°F (218°C) and bake for an additional 5–6 minutes until biscuits are golden brown on top.
  6. Serve and store: Remove from oven and allow to cool for 5 minutes before serving. Store leftovers in an airtight container in the refrigerator for up to 5 days. Reheat as desired.

Notes

  • You can use any combination of mixed vegetables such as frozen peas, broccoli, cauliflower florets, or other preferred vegetables in the filling.
  • Ensure the biscuit dough is slightly sticky but manageable with floured hands to achieve tender biscuits.
  • The biscuit size and number may vary depending on the baking dish used; adjust accordingly to fit on top of the filling.
  • For richer flavor, use fresh herbs when possible, but dried thyme and parsley work well too.
  • Leftover pot pie can be reheated on the stovetop or in a microwave until warmed through.

Nutrition

  • Serving Size: 1/8 of casserole
  • Calories: 350
  • Sugar: 5g
  • Sodium: 550mg
  • Fat: 18g
  • Saturated Fat: 10g
  • Unsaturated Fat: 7g
  • Trans Fat: 0g
  • Carbohydrates: 38g
  • Fiber: 5g
  • Protein: 8g
  • Cholesterol: 45mg