Preheat oven to 400 F. Roll out pizza dough on a cutting board until about 1/2 inch thin. Spread sauce, add cheese and oregano.
Layer pepperoni on the top half, mushrooms on the top third. (or however you'd like. feel free to add your own toppings as well!)
Tuck in the top and bottom ends in, then roll across until a "tube" is formed. Take a pizza peel dusted with flour and transfer to a baking sheet lined with parchment paper
Brush top of Stromboli with melted butter, and season with garlic powder and dried parsley flakes. Cut 4-5 slits to let our steam while baking. Bake for 20-25 minutes until golden brown.
Let rest for about 5 minutes, then cut into 1 inch slices. Serve with marinara for dipping. Enjoy!