01 -
Preheat oven to 175°C. Grease a 12-cup muffin tin with butter or line with paper liners.
02 -
In a large mixing bowl, whisk together all-purpose flour, cornmeal, sugar, baking powder, baking soda, and salt until well blended.
03 -
In a separate bowl, whisk together melted butter, egg, and milk until combined.
04 -
Pour wet ingredients into the bowl with the dry ingredients. Stir gently until just combined; do not overmix.
05 -
Fold in shredded cheddar, corn kernels, chopped green onions, and chopped jalapeño until evenly distributed throughout the batter.
06 -
Divide batter evenly among prepared muffin cups, filling each about three-quarters full. Top each with a slice of jalapeño.
07 -
Bake for 14–16 minutes or until a toothpick inserted in the centre of a muffin comes out clean and tops are golden.
08 -
Remove muffins from the oven and let cool in the pan for 5 minutes before transferring to a wire rack. Serve warm, ideally with a pat of butter.