Preheat oven to 400°F. Grease 18 wells in two muffin tins with Member's Mark™ Unsalted Sweet Cream Butter. Set aside jalapeño rounds, 1/3 cup of corn kernels and 2/3 cup of cranberries to top the muffins before baking.
Melt 1/4 cup Member's Mark™ Unsalted Sweet Cream Butter in a large microwave-safe bowl. Stir in diced jalapeños, remaining corn kernels, remaining 1 cup cranberries, corn muffin mix, cream style corn and eggs.
Divide batter between the 18 muffin wells. Evenly top each muffin batter well with corn, sliced jalapeños, and cranberries. Bake for 25 minutes or until golden brown.