Identify how you’re using brie (spread, bake until gooey, or cheese-board pairing).
Choose the substitute closest to that use: ripened soft cheeses for boards/baking, creamy spreads for sandwiches/dips.
Apply the listed ratio. If the substitute is softer-wetter than brie (e.g., goat cheese), drain or blot briefly; if it’s firmer, blend until spreadable.
Taste and adjust: add a tiny pinch of salt to improve savory depth, or balance tang with a teaspoon of honey/cream if needed for dips.
If baking, give the swap a few minutes longer only when it resists melting (cream cheeses melt fastest than ripened bloomy-rind cheeses).