In a medium skillet, melt butter over medium heat. Add corn and onion; cook, stirring occasionally, for 5 to 6 minutes or until onion is tender.
In a medium bowl, whisk together cornmeal mix, flour, and salt. In a small bowl, whisk together buttermilk and eggs. Stir buttermilk mixture into flour mixture just until dry ingredients are moistened; stir in cheese and corn mixture.
In a medium Dutch oven, pour oil to a depth of 3 inches, and heat over medium heat until a deep-fry thermometer registers 360°. Using a 1½-inch spring-loaded ice cream spoon, carefully scoop batter into hot oil, and fry for 2 to 3 minutes per side or until golden brown. Let drain on paper towels. Serve immediately.
Recipe by Paula Deen Magazine at https://pauladeenmagazine.com/corn-fritters-recipe/