Whisk together flour, baking powder, salt, and cinnamon until evenly combined

Beat softened butter, oil, sugar, and honey until smooth and creamy

Add eggs one at a time, mixing until light and slightly fluffy

Stir in vanilla extract for aromatic depth

Alternate adding dry ingredients and milk, mixing gently until just combined

Pour batter into the prepared pan and smooth the top evenly

Bake until the top turns golden brown and a toothpick inserted in the center comes out clean

Allow to cool slightly as the crumb sets and the honey aroma deepens

Slice into squares once cooled enough to handle