Preheat an oven to 180C/350F and grease an 8-inch round cake pan.
In a large mixing bowl, whisk ½ cup of the honey, oil, vanilla extract, and eggs.
Add the hot water and whisk until combined.
Add the flour, light brown sugar, baking powder, baking soda, salt, and cinnamon, and mix until fully incorporated.
Pour the batter into the greased pan and bake for 28-30 minutes or until a toothpick comes out clean from the center.
Remove the cake from the oven and drizzle the remaining honey over the top.
Let the cake cool completely before slicing and serving.
