Pre-heat the oven to 350F and grease the muffin pan with some oil. You can use the liners too.
Whisk the egg along with sugar and salt.
Mix flour with baking powder and then add jalapeño, tomatoes, spring onion, chili flakes and give it a light mix.
Pour eggs to the dry ingredient’s bowl. Add oil, milk and using a wooden spoon or a spatula, mix all the ingredients until they combine properly. Do not whisk or over mix it!
Add black pepper, half of the grated cheese and give one last mix.
Pour the batter in the muffin pan and fill it half way.
Sprinkle the left over grated cheese on top and let it bake for 20 mins.
Check for doneness by inserting a toothpick in the center. If it comes out clean, the muffins are ready