Spray a 2 and 1/2 quart corningware pan with cooking spray. Set aside.
Over medium heat, cook the ground turkey, bell pepper, onions, and mushrooms. Crumble the ground turkey as it cooks, until no longer pink.
Once turkey is no longer pink, drain any excess liquid in the pan. This step is a MUST. If you skip it, your bake will be much too watery. Then add in salt, minced garlic, and Italian seasoning. Then, stir in the pizza sauce.
Pour prepared turkey mixture into the prepared dish. Sprinkle evenly with mozzarella cheese.
Preheat the oven to 400 degrees.
In a medium bowl, mix the flour and yogurt together until combined.
Lay down a piece of wax paper to help with an easier cleanup. Spray the wax paper very well with cooking spray and then lay out the dough. You may need to knead it a few times to get all the flour incorporated. Spray the top of the dough with cooking spray and your rolling pin. Roll out the dough using a rolling pin to about the shape of the pan you are using. You may need additional flour as this dough is pretty sticky!
Lay the prepared dough over your baking dish. Press the dough into the pan over the meat mixture, and fold over any dough that is hanging over to create a crust. Tip: Use the wax paper to transfer your dough onto the pizza mixture. Flip it over and then pull off the wax paper and proceed to create a crust with remaining dough.
In a small dish, stir together the melted butter, Parmesan, garlic powder, parsley, oregano, and salt. Spread it evenly over the top of the crust.
Bake at 400 degrees for 25-30, or until the crust is golden brown and cooked through. Allow to cool for 5-10 minutes, and then devour!