Preheat oven to 180℃/350℉
Wipe your 10 cup bundt tin with soft butter, toss in a spoonful of flour and tap it around the pan, until all of the inside is covered. Turn it over a sink and tap out the excess flour.
In a large bowl, whisk together the dry ingredients.
In a bowl or jug, whisk the melted butter, oil, brown sugar and caster sugar until glossy.
Add the eggs and whisk again, then whisk in the vanilla, golden syrup, honey and buttermilk.
Pour wet ingredients into the dry, then whisk until combined.
Pour batter into prepared bundt tin. Gently swirl a chopstick through the batter and tap the base of the tin to release air bubbles.
Bake for 50 minutes, or until a skewer comes out clean.
Cool in the pan for 10-15 minutes, then flip out onto a cooling rack to cool completely.
Serve dusted with icing sugar, or drizzle over a Maple Cream Cheese Glaze