Onion Gruyere Tart (Print Version)

# Ingredients:

→ Crust

01 - 1 store-bought pie shell

→ Filling

02 - 3 big onions, cut into thin slices
03 - 2 tablespoons butter
04 - 1 tablespoon olive oil
05 - 1 cup shredded gruyere cheese
06 - 3 eggs
07 - 1/2 cup heavy cream
08 - 1 teaspoon fresh thyme leaves
09 - Salt and pepper to taste
10 - Bacon chunks (if you want)

# Instructions:

01 - Turn your oven on to 375°F (190°C).
02 - First, fry bacon chunks in a big skillet until they're crunchy. Put them aside and keep some of the fat.
03 - Drop butter into the same skillet with your sliced onions. Cook them over medium heat for 10 minutes, giving them a stir now and then. Turn down the heat and let them cook another 40 minutes until they're brown and sweet. Add some salt and pepper.
04 - Spread out your dough and fit it into a tart dish. Poke holes in the bottom with a fork and bake it for 15 minutes with baking weights. Take the weights out and bake 5 more minutes till it's got a golden color.
05 - Layer Gruyère cheese on the bottom of the crust. Pile the browned onions on next. In a bowl, whisk eggs, cream, and thyme together. Pour this mix over the onions.
06 - Scatter more Gruyère and the bacon bits on top. Stick it in the oven for 25-30 minutes until it's firm and the surface is golden.
07 - Let your tart sit and cool a bit before you cut into it.

# Notes:

01 - Slice your onions super thin so they'll brown evenly
02 - Take your time with browning the onions - you can't rush good flavor
03 - Try adding a bit of balsamic vinegar to your onions for extra tastiness
04 - Make sure your crust is fully baked before adding wet stuff or it'll get soggy
05 - Wait about 10-15 minutes before cutting so you'll get neater slices
06 - Pop leftover tart in the fridge in a sealed container and eat within 3 days
07 - Warm up slices in a 350°F oven for around 10 minutes
08 - You can freeze uncooked tarts for up to 3 months