Ingredients

• 1 tablespoon unsalted butter
• 2 tablespoons light brown sugar
• 1 tablespoon heavy cream
• Pinch of salt
• A 12-ounce microwave-safe mug (preferably thin-walled) or deep bowl

Instructions

1. Place butter in mug and microwave on high 30 seconds. Add brown sugar, cream, and salt; stir to combine, and microwave on high 30 seconds. Carefully remove, stir, and microwave on high 15 seconds. Stir and serve.
2. Caramel sauce can be made 1 week ahead. Store in an airtight container and chill. Gently reheat to use.