01 -
Cook the bacon in a skillet over medium heat until crisp, 6-8 minutes. Drain on paper towels, then crumble it.
02 -
Place one tortilla on a board. Add half the cheddar and Monterey Jack, then the bacon, ranch, black pepper, and remaining cheese. Top with the second tortilla.
03 -
Wipe the skillet clean and melt the butter over medium heat. Add the quesadilla and cook for 3-4 minutes, pressing gently, until the underside is golden.
04 -
Flip carefully with a wide spatula. Cook for 2-3 minutes more, until the second side is crisp and the cheese is fully melted.
05 -
Move the quesadilla to a cutting board and rest for 1 minute. Cut into wedges.
06 -
Top the hot wedges with shredded lettuce, tomato, green onions, and pickled jalapenos if using. Serve with extra ranch for dipping.