Preheat the oven to 425 degrees and place 6 cupcake liners in a 12-muffin pan. Skipping every other hole to give lots of room for your muffins to form.
In a large bowl, stir together soft butter and sugar. Add in egg and mashed bananas.
¼ cup Butter, ½ cup Sugar, 2 large Bananas , 1 large Egg
Into the butter mixture, stir in the flour, baking soda, and salt. Only stir until the flour is incorporated.
1 cup Flour, ½ teaspoon Baking Soda, ¼ teaspoon Kosher Salt
Pour into a lined muffin tin, filling the muffin liners ¾ full.
Press 3-5 blackberries into the top of the batter.
1 cup Blackberries
Sprinkle the muffin tops and blackberries with raw sugar.
2 Tablespoons Raw Sugar
Bake at 425 for 5 minutes.
Reduce the heat to 350 degrees and bake for 15 more minutes or until a toothpick inserted into the center comes out clean.
Cool for 10 minutes in the pan, then remove to a cooling rack.