What is the difference between a quiche and a frittata?

The main difference between a quiche and a frittata is the crust. A quiche has a crust, typically made with pastry dough, while a frittata is crustless. Additionally, a quiche is usually baked in the oven, while a frittata is cooked on the stovetop and finished under the broiler. Both dishes are egg-based and can be filled with various ingredients like vegetables, cheese, and meat.