Start by melting your butter in a large skillet on medium heat. Once the butter is melted, add in the garlic, and chili flakes. Give that a good stir, and cook for about a minute. Next, add in the shrimp. Once the shrimp begin to turn opaque, add in the wine. Cook for about 2 minutes to let some of that wine cook off, then season with salt and pepper. Give a stir, then remove everything from the skillet and place into a bowl.
To a mixing bowl, add in the cream cheese, mayonnaise, sour cream, parsley, Sriracha, and mozzarella cheese. Stir to incorporate all of those ingredients.
Preheat your oven to 375 degrees.
Once the shrimp have slightly cooled, give them a rough chop, and add everything into the cream cheese mixture. Give another good stir.
Fold this mixture into a baking dish, then cover the top with the panko breadcrumbs.
To a baking sheet, add the sliced French bread, and drizzle each slice with olive oil.
Place the cheesy shrimp scampi dip, and the French bread into the oven, and cook until the breadcrumbs are nice and golden, and the dip is completely cooked through. Ensure that the bread is nice and golden as well. This should take about 15 minutes.
To serve, scoop out the dip into serving bowl, and dip your crostini into the dip.