1-First Step: Prep and Preheat. Begin by preheating your oven to 350°F (175°C). Grease an 8×8-inch baking dish thoroughly with cooking spray or butter to prevent the casserole from sticking.

2-Second Step: Combine Corn Mixtures. In a large mixing bowl, combine the drained whole kernel corn with the creamed corn, including all the liquid, to form the creamy base of your casserole.

3-Third Step: Add Dry and Dairy Ingredients. Add the Jiffy corn muffin mix into the corn blend. Follow by stirring in the sour cream and melted butter. Mix gently but thoroughly until just combined to avoid over-mixing which helps maintain a tender texture in your casserole.

4-Fourth Step: Dietary Adaptations. For special dietary needs, swap sour cream and butter with vegan or low-fat alternatives at this stage. This adjustment keeps the casserole suitable for various diets without sacrificing flavor or moisture.

5-Fifth Step: Transfer to Baking Dish. Pour the batter into the prepared baking dish and spread it evenly to create a smooth surface. This ensures even cooking and a consistent texture throughout.

6-Sixth Step: Bake to Perfection. Bake the casserole uncovered for 45 to 50 minutes, or until the top is golden brown, puffed slightly, and a toothpick inserted in the center comes out clean. The casserole should have a firm but moist center, not jiggly.

7-Final Step: Cool and Serve. Allow the casserole to cool for about 10 minutes before serving to let it set. Optionally, garnish with fresh herbs like parsley or chives for a pop of color and fresh aroma.