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Caramelized Onion & Mushroom Pot Pie

Caramelized Onion & Mushroom Pot Pie
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The Caramelized Onion & Mushroom Pot Pie combines slow-cooked, sweet caramelized onions and earthy sautéed mushrooms beneath a golden, flaky crust. This comforting vegetarian dish is rich in layered flavors, easy to prepare ahead, and customizable to suit various dietary preferences, making it a perfect cozy meal for any occasion.

Ingredients

Scale

Vegetables

  • 2 large yellow or sweet onions, thinly sliced
  • 12 oz cremini or button mushrooms, cleaned and chopped
  • Optional: diced carrots, peas, or spinach for variations

Fats and Oils

  • 2 tbsp butter (substitute plant-based oil for vegan option)
  • 1 tbsp olive oil

Thickening and Liquids

  • 2 tbsp all-purpose flour (use gluten-free flour for gluten-free option)
  • 1 ¼ cups vegetable broth

Herbs and Seasonings

  • 1 tsp fresh thyme leaves
  • Salt, to taste
  • Black pepper, to taste

Crust

  • Puff pastry or pie crust (choose gluten-free or vegan versions as desired)

Optional Additions (Variations)

  • ¼ cup shredded sharp cheddar or gruyere cheese
  • Rosemary or sage instead of thyme
  • Plant-based milk or egg wash for brushing crust

Instructions

  1. Caramelize the Onions: Thinly slice the onions and cook them slowly in butter and olive oil over low heat, stirring occasionally for about 30-40 minutes until they develop a deep, sweet, caramelized flavor.
  2. Sauté the Mushrooms: When the onions are almost done, add the cleaned and chopped mushrooms to a hot pan with a little butter. Cook until the mushrooms release their moisture and are golden brown, enhancing their earthy taste.
  3. Prepare the Filling: Combine the caramelized onions and sautéed mushrooms in the pan. Sprinkle the flour evenly and cook briefly to remove the raw taste. Gradually stir in vegetable broth and add fresh thyme. Simmer the mixture until thickened to a creamy consistency. Season with salt and pepper to your preference.
  4. Assemble the Pot Pie: Transfer the thickened filling into a baking dish. Cover the filling with your choice of puff pastry or pie crust, trimming any excess dough. Brush the crust with an egg wash or plant-based milk to achieve a golden, shiny finish.
  5. Bake to Perfection: Preheat the oven to 375°F (190°C). Bake the assembled pot pie for 25-30 minutes or until the crust is puffed up and golden brown. Allow it to cool slightly before serving to let the filling set and make slicing easier.

Notes

  • Patience is essential when caramelizing onions to develop deep, rich sweetness; avoid rushing this step.
  • Use fresh mushrooms rather than pre-sliced for better texture and flavor.
  • Fresh thyme adds brightness that balances the richness—don’t omit it.
  • Seal and crimp the pastry edges thoroughly to prevent filling leakage during baking.
  • Allow the pot pie to rest briefly before serving to enhance flavor harmony and cleaner slices.

Nutrition

Keywords: pot pie, caramelized onion, mushroom, vegetarian, comfort food, flaky crust, make-ahead, cozy dinner

Find it online: https://mealsbylina.com/caramelized-onion-mushroom-pot-pie/