In a small microwave safe dish, add chocolate chips, butter and corn syrup. Microwave for 30 seconds and stir, add more time if not melted completely. Once melted, add in 1 teaspoon of avocado oil to make it extra smooth.
Pour the glaze over the cake, beginning in the center and smoothing out with an offset spatula. It will cover the entirety of the cake, starting from center and working outwards and down the sides. You will probably have to wipe the bottom of the cake stand if you want clean lines, if you don’t care then leave the extra glaze there! This glaze will harden in the fridge and when at room temperature soften but not melt.
I recommend refrigerating the cake for 20 minutes or longer so it is easier to cut, but it is not necessary!
Keep leftover cake in fridge up to 3 days.