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French Onion Soup Mini Pies

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French Onion Soup Mini Pies are a savory, handheld twist on the classic French onion soup. Filled with deeply caramelized onions, melty Gruyère cheese, and wrapped in flaky pastry, these mini pies are perfect for parties, holidays, or cozy gatherings.

Ingredients

  • 4 large yellow onions, thinly sliced
  • 2 tbsp butter
  • 1 tbsp olive oil
  • 2 cloves garlic, minced
  • 1 tsp fresh thyme leaves (or 1/2 tsp dried)
  • 1/4 cup beef or vegetable broth
  • Salt and black pepper to taste
  • 1 1/2 cups shredded Gruyère cheese (or Swiss cheese)
  • 2 sheets puff pastry or pie dough, thawed if frozen
  • 1 egg, beaten (for egg wash)
  • Cooking spray or butter for greasing muffin tin

Instructions

  1. Preheat oven to 375°F (190°C). Grease a standard muffin tin or mini pie pans.
  2. In a large skillet, heat butter and olive oil over medium-low heat. Add sliced onions, garlic, and thyme. Cook, stirring occasionally, for 30–40 minutes until onions are deeply caramelized.
  3. Deglaze the pan with broth and cook until liquid is mostly absorbed. Season with salt and pepper. Let cool slightly.
  4. Roll out pastry and cut into circles large enough to fit the muffin tin cups. Press one piece into each muffin cup to form the base.
  5. Add a spoonful of caramelized onions and a generous pinch of shredded cheese into each cup.
  6. Top with another piece of pastry, pressing edges to seal. Cut a small slit in the top to vent steam.
  7. Brush the tops with beaten egg.
  8. Bake for 20–25 minutes, or until crust is golden and crisp.
  9. Cool for a few minutes before carefully removing from the tin. Serve warm.

Notes

Caramelize onions ahead of time and refrigerate for up to 3 days.Use pie dough for a sturdier crust or puff pastry for a flakier finish.Try mozzarella, fontina, or provolone for a cheese variation.To prevent soggy bottoms, make sure onions are not watery and consider blind baking the base crusts for 5 minutes.Freeze baked or unbaked pies for longer storage—bake from frozen as needed.

Nutrition

Find it online: https://cookibly.com/french-onion-soup-mini-pies/