Choose the substitute based on your goal: stretchy pull (asadero/Oaxaca) vs. easy melt for baking (Monterey Jack).
Measure using the listed ratio. Shred block cheeses so they melt evenly instead of forming oily pockets.
For drier cheeses (like low-moisture mozzarella), bake or cover briefly so the melt stays creamy rather than rubbery.
Warm stove-cooked dishes until just bubbly and lightly browned; remove early if you want mild, not sharp, flavor.
Taste once melted and adjust salt/seasoning in the dish (not the cheese) if needed.