Mushroom and Onion Tart

Ingredients

• Gruyere cheese (1 cup, grated)
• Milk (1/2 cup)
• Eggs (3)
• Salt and pepper (to taste)
• Thyme (1 teaspoon)
• Garlic (2 cloves, minced)
• Olive oil (2 tablespoons)
• Onion (1 large, thinly sliced)
• Mushrooms (8 ounces, sliced)
• Pie crust (1, store-bought or homemade)

Instructions

1. Preheat the oven to 375°F.
2. Roll out the pie crust and press it into a tart pan. Trim any excess crust.
3. In a large skillet, heat the olive oil over medium heat. Add the onions and cook until caramelized, about 10 minutes.
4. Add the mushrooms, garlic, thyme, salt, and pepper to the skillet. Cook until the mushrooms are tender and any liquid has evaporated, about 5 minutes.
5. In a separate bowl, whisk together the eggs and milk. Season with salt and pepper.
6. Spread the caramelized onions and mushrooms evenly over the pie crust. Pour the egg mixture over the top.
7. Sprinkle the grated Gruyere cheese over the filling.
8. Bake for 25-30 minutes, or until the tart is set and golden brown.
9. Allow the tart to cool slightly before slicing and serving.