Preheat the oven to 350°F. Generously brush cupcake or muffin tin with butter.
Sesame Paste
Toast black sesame seeds in a pan over medium heat. Keep stirring until you smell the aroma and hear light popping sound. You can also place sesame seeds onto a baking sheet and bake for 5-10 minutes.
Using a coffee grinder, blender, or food processor, grind the toasted seeds until grainy. Add honey and mix until smooth. Set the sesame paste aside.
Sesame Mochi Muffins
In a large bowl, prepare dry ingredients. Mix flour, brown sugar, baking powder, and salt together.
In another bowl, prepare wet ingredients. Whisk together melted butter, coconut milk, and eggs.
Add dry ingredients into the wet ingredients. Mix until smooth. Then add sesame paste into the batter, stir until well combined.
Fill each muffin tin with batter up to just below the rim. Sprinkle some black and white sesame seeds on top (optional).
Bake for 50-55 minutes, or until the tops and edges are golden brown. Remove muffins from the tin and let cool completely before eating. Enjoy!