Preheat oven to 350°F (175°C) and grease a your silicone molds.
In a medium bowl, whisk together flour, baking powder, baking soda, and salt. Set aside.
2 cups All-Purpose Flour, 1 teaspoon Baking Powder, ½ teaspoon Baking Soda, ½ teaspoon Kosher Salt
In a large bowl, cream together softened butter and sugar until light and fluffy.
½ cup Unsalted Butter, ¾ cup Granulated Sugar
Beat in eggs, one at a time, followed by vanilla extract and milk.
2 Eggs, 1 teaspoon Vanilla extract, ¼ cup Milk
Stir in mashed bananas until well combined.
3 Ripe bananas
Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix.
Add batter into each mold or muffin liner until they are ¾ of the way full.
Then bake muffins until a toothpick can be inserted into the middle of the muffin and it comes out clean. For the silicone mold muffins, this should take approximately 18-20 minutes. Let the muffins cool for ten minutes in the molds before turning upside down and removing the muffins from the mold. If your mold was greased well, the muffins should slide out easily.
You are of course welcome to choose whether you want to cut off the domed portion of your muffins into a perfect cylinder or simply let them be! Make sure to let the cakes cool completely before frosting.