Squab pie is a type of food that is made with squab, which is basically a baby pigeon.
Now, before you get all freaked out, squab is actually a type of meat that has been eaten by humans for a very long time. It's kind of like how some people eat chicken or turkey, except it comes from a different bird.
To make squab pie, chefs usually start by roasting the squab in the oven until it's cooked all the way through. Then they take the meat off the bones and mix it with other tasty ingredients like vegetables, herbs, and gravy.
After that, they put the mixture into a pie crust, which is like a little shell made of dough that you can fill with all kinds of yummy stuff. Then they bake the whole thing in the oven until it's golden brown and nice and hot.
When the squab pie is done, it comes out of the oven looking and smelling really good! You can eat it as a main course, kind of like a big hearty meal, or you can serve it as a fancy appetizer to impress your friends and family.
So there you have it, squab pie is just a tasty dish made with a kind of bird meat that's been enjoyed by humans for years and years.