Thick tortilla bases topped with melted cheese and salsa resemble erupting volcanoes. This family-friendly, protein-rich antojito is a fresh, cheesy Mexican street food classic.
Preheat oven broiler to high heat or a large cast-iron skillet over medium-high flame.
Brush both sides of each thick corn tortilla with olive oil, sprinkle lightly with coarse salt.
Place tortillas on an oven-safe tray or skillet; toast for 3-4 minutes per side until crisp at edges—do not over-brown.
Optional: Spread a thin layer of warmed refried beans on each crisp tortilla base.
Mound 1/2 cup of shredded cheese onto each tortilla; broil or cover skillet for 4-5 minutes until the cheese is dramatically melted, bubbling, and beginning to brown at tips.
Top immediately with generous spoonfuls of salsa, sprinkle with fresh cilantro, and serve hot with extra salsa on the side.