Storage: Store cakes in an airtight container at room temperature for up to 3 days, or refrigerate for longer freshness.
Variation: If you prefer a less intense coffee flavor, substitute half of the Kahlua with strong brewed coffee or milk.
Tip: For the best texture, ensure butter is softened to room temperature before creaming. Sifting flour helps ensure a lighter crumb, though it is optional if you mix gently.
Serving: These cakes pair wonderfully with a cup of coffee or tea. The Kahlua Swirl Cake is particularly good for holiday gatherings.