Allow pizza dough to come to room temp. Wash your veggies (No, not the onion) and take the skins off of your sausages. With a little bit of oil in a hot pan, add in sausages and break apart, followed by the onions and mushrooms.
When the sausage is just about cooked through and the veggies are looking good, add the peppers. Cook a few minutes and remove from heat. Get a large sheet pan or pizza pan ready.
Stretch your dough into a rather large rectangle. Spread a little more than 3/4 of your cheese on the dough. Top with your sausage mixture and leave a flap exposed. Dont go to the edge with your filling.
Prepare an egg wash. Brush the flap facing away from you and the two sides. Roll once, fold sides in, then wrap tightly. Should remind you of rolling a.... burrito.
Cut three slits in the dough to allow it to vent. Brush entire Stromboli with egg wash. Top with cheese, being careful not to block the vents.
Bake in a 400F oven for about 25 minutes or until golden and attractive. I made a sauce with 75% Marinara 25% BBQ sauce. Garnish with some parsley. Allow to cool a bit before slicing.
