Preheat oven to 350 degrees F and prepare a casserole dish with non-stick cooking spray.
Slice sweet rolls in half and place the bottom half in the prepared casserole dish.
In a small dish place, mayonnaise and 1 tablespoon dried oregano and mix together. Spread on the bottom of your sweet rolls. Top with ham, salami, pepperoni, and provolone cheese. Place the top half of your sweet rolls on top.
Brush on olive oil and sprinkle on remaining dried oregano. Bake for 10-12 minutes or until cheese is melted and rolls are warm. Serve them and enjoy!