1.Preheat oven to 375 F.
2.Line a 9×13-inch pan with parchment paper. Set to the side
3.Using a large serrated knife, slice the rolls in half so you have a top and a bottom. You want to keep them connected.
4.Place the bottom part of rolls on the baking pan.
5.Spread the marinara evenly on the bottom part of the rolls.
6.Add 1/2 of your mozzarella cheese and colby jack all over, on top of the sauce.
7.Evenly layer the 1/2 of the pepperoni over the cheese. .Repeat steps.
8.Finely add your black olives. (optional)
9.Add the top of rolls to your bottom rolls. Set to the side.
10.In a small microwave safe bowl, add the butter melt on high for 1 minute.
11.Add the oregano, garlic salt, parsley, and whisk to combine.
12.Add the butter mixture on top of the rolls.
13.Sprinkle parmesan cheese on top of the rolls.
14.Bake covered for about 12 to 15 minutes or until cheese has melted.
15.Slice into individual sliders and serve immediately.