Jalapeño popper stuffed burgers

My husband has been loving fast food lately. Burgers, sandwiches, wings, etc. So I've been hunting for recipes to keep up. For these burgers, I googled a few recipes and then just winged it. 

First marinate ground beef with salt, white pepper, black pepper, garlic powder, onion powder, breadcrumbs, dried parsley flakes, and an egg. Separately make a mixture of diced jalapeños, cream cheese, and your choice of shredded cheese (you can use cheddar, pepper jack, mozzarella, etc). To make the patties, make two thin patties, place as much of the jalapeño mixture as you would like in the middle of one patty and cover it with the other, then press the sides together. Then drizzle a little oil on a grill pan and grill for about 6-7 mins per side. Then take the buns (I used kaiser rolls and split them), and toast them with a few drops of oil on a pan. 

To assemble the burgers, first make a sauce of mayo, ranch, and fire sauce. Spread that on the bottom bun, then add lettuce, sliced tomatoes, and the burger patty. Top with caramelized onions and spicy mustard.