01 - In a large skillet over medium-high heat, cook the ground beef until browned, approximately 5-7 minutes. Drain excess fat from the pan.
02 - Add chili powder, smoked paprika, cumin, garlic powder, onion powder, salt, and black pepper to the cooked beef. Stir to combine and cook for 1-2 minutes. Remove from heat and set aside.
03 - In a medium saucepan, melt butter over medium heat. Whisk in cornstarch and cook for 1 minute to create a paste.
04 - Gradually whisk in the milk while stirring constantly until the mixture thickens, approximately 2-3 minutes.
05 - Reduce heat to low. Add cream cheese to the sauce, stirring until completely smooth and no lumps remain.
06 - Gradually add shredded cheddar and pepper jack cheese to the sauce, stirring continuously until fully melted and well combined.
07 - Stir in the drained diced tomatoes with green chilies and pickled jalapeños until evenly distributed.
08 - Fold the seasoned ground beef mixture into the cheese sauce until thoroughly combined.
09 - Transfer the dip to a serving bowl or slow cooker set to warm setting. Garnish with fresh cilantro and additional jalapeño slices. Serve hot with tortilla chips.