Preheat oven to 400 degrees. Spray a regular size muffin pan with nonstick spray.
Prepare Tarts:
Heat olive oil in a large frying pan over medium heat.
Add shallots, then cook until caramelized, stirring occasionally. Reduce heat to keep from burning, if necessary. Season to taste with salt and pepper.
Meanwhile, whisk together eggs, milk, and salt and pepper (to taste) in a small bowl. Set aside.
Place pie crust on a flat surface; use a 2.5-inch cookie cutter to cut out 12 rounds.
Gently press pie crust rounds into muffin pan.
Top crust with shallots, then cheese. Pour egg mixture over shallots and cheese. Do not overfill.
Bake tarts until set and crust is lightly browned, about 15 to 20 minutes.
Prepare Mushrooms:
While tarts are cooking, heat olive oil in a large pan over medium high heat.
Add mushrooms and cook, stirring frequently, until browned.
Stir in garlic and remove from heat, continuing to stir until pan stops sizzling.
Season mushrooms to taste with salt and pepper, then mix in fresh thyme.
Serving:
Top tarts with mushrooms and a sprinkle of thyme, then serve. Enjoy!
Notes
When caramelizing the shallots, you can add a tablespoon of water anytime the pan looks dry or the shallots start to brown too quickly. This will also help them soften faster. They should be deep brown and jammy looking when they're done.Feel free to experiment with different toppings for the tartlets. They are also delicious served plain!Make sure to read the information before this recipe card for helpful tips, step by step photos, and more!