This is a dish my sister makes for special occasions. It is not too sweet and it's very rich and creamy. If you like a sweeter dish, double the sugar. This makes for a lovely presentation that looks like you went to a lot of effort but didn't.
If you don't have frozen lingonberries, you can use any sweetened, thawed frozen fruit, such as strawberries, blueberries, or raspberries for the topping!