In a small bowl, whisk egg yolks. Pour one cup heavy cream in a medium bowl, with mesh strainer set on top.
In a medium saucepan, combine whole milk, remaining 1 cup heavy cream, sugar, salt, vanilla and cake mix. Cook over medium-low heat, stirring until smooth and then occasionally, until heated through and just steaming.
While whisking the yolks continuously, slowly drizzle a quarter of the hot liquid into the yolks. Pour egg mixture into saucepan. Continue cooking until the mixture coats the back of a wooden spoon.
Pour through mesh strainer into heavy cream. Cool over an ice bath. Transfer to the refrigerator to chill completely prior to churning, 4-6 hours or overnight.
Churn according to manufacturer's directions. In the last 5 minutes of churning, slowly add rainbow sprinkles. Transfer to a freezer safe container. Freeze until solid.
Notes
Recipe serves roughly 4-6, yields 1 quart. An original recipe from Baked by Rachel
Nutritional information is provided as a courtesy and is an estimate only. Nutrition information can vary for a variety of reasons. For the most accurate data, use your preferred nutrition calculator with the actual ingredients you used to make this recipe.
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