Pre-heat the oven to 425 degrees F and grease a 9 inch pie pan. Position one of the crusts into the bottom of the pan and cut off an excess so that about 1/4 of an inch hangs over the side. Place in the fridge while you prepare the filling.

In a large skillet over medium high heat, melt the butter. Once melted, add in the onion and celery and saute for 5 minutes until softened.

Mix in flour, salt and pepper and stir until the flour is fully combined

Slowly mix in the milk, adding it a little at a time and continuing to stir. Sir in the broth. Cook over low heat for 5 minutes until the sauce begins to thicken. Stir in chickpeas and frozen veggies.

Pour the filling into the prepared pie pan (it'll seem like almost too much filling but it's fine!). Brush the edges of the crust with water or plant based milk.

Cover the pie with the other crust and trim it so that 1/2 an inch hangs over the side. Seal the 2 crusts together and crimp the edges. You can do this for a fork or with your fingers. Cut a few slits in the op of the dough (see video).

Bake for 40 minutes. Watch the last 10 minutes and put foil over edges of crust to avoid burning. Let sit for about 10 minutes and enjoy!! The filling will be quite runny and messy and thickens up the more that it sits.