Need a quick, savory accompaniment for a cheese plate or antipasti spread? When briefly heated together, the delightfully tangy capers, unami-rich anchovies, and pungent mix of olives come alive.
Sprinkle anchovies with salt; mash into a paste with the side of a knife. Transfer to a skillet with remaining ingredients, stirring to combine. Cook over medium heat until mixture is fragrant and comes to a bare simmer, 2 to 3 minutes. Let cool slightly and serve, or refrigerate in an airtight container up to 1 week; gently reheat in a skillet or microwave before serving.