Preheat the oven to 375°F (190°C).
Add the softened cream cheese, sour cream, and garlic powder to a mixing bowl.
Using an electric mixer on medium speed, beat until the mixture is smooth and fluffy.
Add the shredded cheddar, 3/4 cup Parmesan, and well-drained diced jalapenos. Mix until evenly combined.
Spread the Jalapeno Popper Dip mixture evenly into an 8x8-inch baking dish.
In a separate bowl, combine the Panko breadcrumbs, melted butter, 1/4 cup Parmesan, and chopped parsley.
Stir until the breadcrumbs are evenly coated with butter.
Sprinkle the crumb mixture evenly over the cream cheese filling.
Bake for 15–20 minutes, or until the dip is hot and bubbling around the edges and the breadcrumb topping is golden brown.
Let the dip rest briefly before serving warm with your favorite dippers