Unroll dough onto cookie sheet and sprinkle with sesame seeds. Gently push seeds into dough. Bake at 400 10 minutes, until turning golden.
While crust is baked saute mushrooms in butter and olive oil over medium high heat, stirring occasionally, until mushrooms are golden and cooked through. Top with 1/2 spinach and cover with a lid. Let steam for several minutes then remove lid and stir wilted spinach into mushrooms. Add remaining spinach and repeat..Set vegetables aside until crust is ready.
Remove crust from oven and top with a thin layer of Alfredo sauce. Top with spinach and mushrooms, using a slotted spoon and squeezing spinach to drain. Cover vegetables with 2/3 of Parmesan, then proscuitto. Return to oven and bake 5-8 more minutes until brown bubbly and cheese is melted. Top with remaining Parmesan and return to oven for 2 minutes to melt. Cut into 8 squares