Prep Time 20 minutes mins
Cook Time 18 minutes mins
Resting Time 30 minutes mins
Total Time 1 hour hr 8 minutes mins
For best results, make sure all refrigerated ingredients are at room temperature so the batter emulsifies smoothly and the cupcakes rise evenly; avoid overmixing once the flour is added to keep the crumb tender, and watch the baking time closely since overbaking will dry them out. Let the butterscotch sauce cool completely before adding it to the frosting so the butter doesn’t melt and the frosting holds its shape well. If your frosting becomes too soft, chill it for 10–15 minutes before piping, and if it’s too thick, add cream a teaspoon at a time. Store cupcakes in an airtight container at room temperature for up to 2 days (if your kitchen is very warm, refrigerate and bring to room temperature before serving), and consider making the sauce a day ahead to save time and deepen the flavor.