Gather all ingredients. Have 2 sheets of parchment paper ready. Place a baking sheet in the oven and preheat to 450F. In a microwave safe dish, put the larger amount of the cheese (listed in Crust) and the cream cheese and microwave for 15 seconds at a time until cheese is melted. Remove and stir each time. Be careful not to overcook. You want it melted just enough to combine the two thoroughly.
To the cheeses, add the almond flour and knead until a dough is formed and ingredients are well incorporated. Place dough on a sheet of the parchment paper. Place second piece over the top of the dough and roll out until dough is between 1/8 and 1/4 inches thick. You want it thin enough to bake quickly, but not so thin you end up with a cracker crust.
Remove top parchment paper and set aside. Spread remaining cheese (listed in Crust) all around the outer edge of the crust and carefully fold crust over it, to form stuffed crust. Pinch to seal well. Alternatively, if not making stuffed crust, simply roll outer edge inward 2 inches to form the crust.
Sprinkle the garlic salt evenly over the crust and poke some holes in it with a fork. This will help keep it from forming large bubbles. Carefully lift crust with parchment paper underneath and place it on the hot baking sheet. Bake for about 6-8 minutes or until crust is a nice golden brown. Oven temps vary, so keep a close eye on it.
Remove crust from oven carefully by lifting parchment off of pan. (You can slide a large spatula underneath to help, if needed.) Cover crust with other piece of parchment, flip, and return crust with parchment underneath to top of pan in oven. Bake for an additional 5 minutes. Remove from oven with parchment, leaving pan in and oven on.
Place veggies in a microwave safe dish with the water. Cover with a paper towel (or clear wrap with holes poked in it to vent) and microwave for one minute or until crisp tender. Remove and drain any water.
Using the other piece of parchment, carefully flip crust right side up, so stuffed crust is facing up. Top crust with sauce, cheese, meat, veggies, and parmesan, in that order. Return crust with parchment underneath to oven for 2-3 minutes or until cheese is melted and just beginning to turn a light brown. Remove from oven, slice, and serve.