This lemon and raspberry cream cheese frosting recipe helps me pull off one of my favorite mom tricks: using homemade frosting on cake mix treats. Imagine the zest of lemon perfectly balanced with the sweet, juicy burst of fresh raspberries, all swirled into a luscious and tangy cream cheese frosting.
Place the raspberries in a small saucepan over low heat. Use a fork to mash the raspberries. Cook until the raspberries break down and the mixture becomes liquidy.
Pour the raspberry mixture through a fine mesh strainer into a bowl. Use a rubber spatula to press the raspberry juice through the strainer. (I got about ½ cup raspberry juice after straining.) Set aside to cool.
Beat butter and cream cheese at medium speed in a large mixing bowl with a hand mixer or with the paddle attachment in the bowl of a stand mixer until creamy. Add the raspberry juice, lemon zest, almond extract, and salt and beat at low speed until smooth.
Gradually add the powdered sugar, scraping down the sides of the bowl as needed, until you reach a spreading consistency.