In a large mixing bowl beat the cream cheese on medium speed (use an electric hand mixer or the bowl of a stand mixer with the paddle attachment) until it's fluffy and creamed.
16 oz full-fat cream cheese
Add in the sugar, heavy whipping cream, flour, and vanilla extract. Beat together on medium speed for about 2 minutes or until it's really light and fluffy.
1/2 cup granulated sugar, 3 tablespoons heavy whipping cream, 1 tablespoon all-purpose flour, 1 teaspoon vanilla extract
Add in the eggs one at a time, beating after each one, and mix just until incorporated.
2 large eggs
Gently stir in the sprinkles using a wooden mixing spoon or spatula.
1/3 cup rainbow sprinkles
Fill each muffin liner 3/4 of the way full with funfetti cheesecake batter.
Bake for 16-18 minutes or until the center is almost set. Remove the pan from the oven and let it cool down to room temperature. Cover the pan with plastic wrap and let it refrigerate overnight, or for at least 6 hours.