Preheat your oven to 350 degrees Fahrenheit. This is crucial as it ensures that your muffins start baking at the right temperature for optimal rise. A hot oven will give you that lovely golden brown top.
In a large mixing bowl, combine all of the ingredients: the Jiffy Corn Muffin Mix, eggs, chopped green chilis, creamed corn, pepper jack cheese, vegetable oil, sour cream, sugar, salt, onion powder, garlic powder, and cayenne pepper. Mix everything together until just combined. Be careful not to overmix; you want to keep the muffins light and fluffy.
Allow the mixture to sit for 5 to 10 minutes. This resting period helps the ingredients meld together, resulting in a lighter muffin.
While the mixture is resting, prepare your mini muffin tin. Spray the cups with non-stick spray and add paper liners, then spray the inside of the liners as well. This step is essential because the muffins can stick if not properly greased.
Using a scoop, fill the muffin cups about two-thirds full with the mixture. This gives them room to rise nicely without overflowing.
Place the muffin tin in the preheated oven and bake for 10 to 15 minutes. You’re looking for a lightly browned top; it should spring back when pressed gently. The key here is to keep an eye on them in the last few minutes of baking.
Once done, remove the muffins from the oven and allow them to rest in the tin for about 2 minutes. This helps them firm up slightly.
Carefully remove the muffins from the tin and transfer them to a wire rack to cool completely. This will prevent them from becoming soggy as they cool.