Preheat the oven to 400°F. Grease a mini muffin tin or line it with mini muffin liners.
In a large mixing bowl, combine the cornmeal, flour, baking powder, salt, and sugar. Whisk until well blended.
In another bowl, mix the buttermilk, eggs, and melted butter. Pour the wet ingredients into the dry ingredients and stir until just combined.
Gently fold in the corn kernels and cinnamon if using.
Spoon the batter into the prepared mini muffin tin, filling each cup about two-thirds full.
Bake for 12-15 minutes or until the tops are golden brown and a toothpick inserted in the center comes out clean.
While the cornbread poppers are baking, prepare the honey butter by mixing the softened butter, honey, and salt in a small bowl until smooth.
Once the poppers are done, remove them from the oven and brush the tops with melted butter.
Let them cool for a few minutes before serving. Serve warm with the honey butter on the side.