If you don't have mascarpone on hand or can't find it at your local grocery store, there are a few substitutes you can use in its place. Ricotta cheese is the most common substitute for mascarpone. It has a similar consistency and taste, and is widely available. If you're looking for a non-dairy option, cream cheese is a good option. It's not quite as rich as mascarpone, but it will still give your tiramisu a creamy texture. If you're in a pinch, you can also use whipped cream. Whip cream until it's thick and creamy, then fold in some sugar to sweeten it. This won't be as rich as mascarpone, but it will still be delicious. Or, do as we did here, and mix both the cream cheese and whipped cream together for a fluffy, delicious filling! No matter which substitute you choose, your tiramisu will be delicious. So don't stress if you can't find mascarpone, just use one of these substitutes and enjoy!