Remove refrigerated pie crust from the refrigerator for about 15 minutes before preparing quiche.
To caramelize the leeks, heat butter and sliced leeks in a heavy-bottomed saucepan or dutch oven over medium heat until butter is melted. Stir to coat all of the leeks in the butte
Sprinkle leeks with a pinch of salt and reduce heat to medium-low. Cook, frequently stirring, for about 30 minutes, until the leeks are golden brown and fully caramelized. After the first 15-20 minutes, you may notice some browning in the bottom of the pan; add a tablespoon or two of water to the pan while the leeks are caramelizing to prevent burning. Repeat as needed while caramelizing.
Unroll dough and place your tart pan on top of the crust. Cut a circle (it doesn’t have to be perfect) about 1 inch outside the border of the tart pan.
Press the crust into the tart pan, tucking the edges down along the sides and cutting off any excess dough so that the crust is even with the top of the pan.
Place the tart pan into the basket of the air fryer and cook at 300°F for 5 minutes. ● Sprinkle 1-2 tablespoons of caramelized leeks and the artichoke heart pieces into the bottom of the cooked crust.
Whisk together egg and heavy cream until smooth and fluffy.
Carefully pour egg mixture over the fillings in the crust. The egg mixture should reach the top edge of the crust. Do not overfill.
Sprinkle shaved parmesan cheese over the top of the egg mixture.
Place the prepared quiche back into the air fryer's basket and cook at 300°F for another 10 minutes or until the egg is set in the center.
Allow to cool for 1-2 minutes, and then carefully pop the quiche from the tart pan. Use a spatula to remove the quiche from the bottom plate of the tart pan and serve immediately or set it on a cooling rack to cool.
Plate, serve, and enjoy!