Begin by placing your mixing bowl and whisk attachment in the freezer for about 30 minutes to get them well-chilled. This step ensures the mascarpone cream will whip up smoothly.
Add the cold mascarpone cheese to the chilled bowl. Set your mixer to a medium-low speed and beat until the cheese is completely smooth.
Next, pour in the powdered sugar. Start mixing on low to prevent a powdered sugar dust cloud, then raise the speed to medium-high once incorporated, beating for about 1 minute. Stop as needed to scrape down the sides with a spatula to make sure everything blends well.
Add in the vanilla extract or vanilla bean paste, and with the mixer on medium-high, begin to gradually pour in the cold heavy cream. Do this in around four additions, pouring along the side of the bowl to avoid splashes.
Once all the cream is mixed in, watch the texture carefully. It should start to thicken and hold its form shortly after the cream is fully incorporated. If using a hand mixer, it might take a bit longer, but avoid over-mixing as this could cause the cream to become runny and beyond rescue.
As soon as the mascarpone cream begins to hold its shape, turn off the mixer and check for stiff peaks by dipping the whisk into the cream and lifting it to see if it holds a nice, firm peak. If it doesn’t, continue mixing on medium-high in 15-30 second intervals until it reaches this consistency.
This mascarpone cream is wonderfully versatile: perfect for frosting cupcakes, layering on cakes, or as a delightful topping for cookies, pies, and even ice cream. It pipes beautifully and can be stored in an airtight container in the fridge for up to two days.