Preheat oven to 350 degrees F.
Spray 9x13" casserole dish with cooking spray. Set aside.
In large bowl, beat together cream cheese and mayonnaise.
Stir in diced jalapeno, diced bacon, garlic powder, cheddar cheese, and ¼ cup of Parmesan cheese.
Pour into prepared baking dish.
Combine remaining ¼ cup Parmesan cheese, breadcrumbs, and melted butter, mixing to combine.
Sprinkle breadcrumb mixture over dip.
Bake in preheated oven for 25-30 minutes, until dip is bubbling and breadcrumbs are golden brown.
Serve with sliced baguette, tortilla chips, or crackers.
Enjoy!