Preheat oven to 400 degrees.
Line baking sheet with parchment paper.
Roll pie dough into a 16-18 inch circles. Place the pie dough on the baking sheet and move to the fridge.
Mix your egg and milk in a small bowl. Make sure and mix it well, this will be your egg wash.
Heat the olive oil in a saute pan. Add your spinach. Cook for 1 minute, then add your garlic. Cook another 2 minutes, remove from heat. Allow it to cool just a minute or 2.
Remove the pie dough from the fridge. Spread the grated mozzarella over the whole circle. The other ingredients will only go in the center with a 1-inch gap on the outside for closing. I like cheese in the crust.
Spread the spinach over the mozzarella, then add your artichoke hearts. Spread them across the surface evenly.
Last up is the walnuts and bleu cheese crumbles.
Start folding in your edges, 2-4 inches at a time, pleating as you work your way around. I also like to press those pleats gently, so they stay closed while baking.
Brush the edges with your egg wash. Place in oven.
Bake for about 22-30 minutes until the cheese is melted and the crust is golden brown. Remove from oven.
It is delicious served right away. It is also really good reheated. If you are keeping this for leftovers, make sure and wrap well with saran wrap or in a tupperware container. It will hold well in the fridge for up to 5 days! Simply reheat in the oven or in the microwave oven.