Mix ground beef with the spices and eggs. Add ground beef, eggs, garlic powder, onion powder, salt, and back pepper in a bowl.
Combine the mixture using your hands and keep it aside for 5 minutes.
For preparing jalapeno ranch sauce, add mayonnaise, buttermilk, cilantro, jalapenos, minced garlic, and ranch seasoning.
Whisk until the sauce is creamy and smooth.
Moving forward, form the mixture into round-shaped patties. Gill them until golden brown and crispy to perfection.
Simultaneously, toast the hamburger buns with a teaspoon of butter.
Finally, when the patties are cooked and the buns are toasted, club the burger.
Smother the ranch dressing on the bottom bun of the burger.
Place the beef patties on the burger, followed by onions, poblano pepper, lettuce, and melted Monterey jack cheese slices.
Serve the Monterey melt with your favorite toppings and sides.