Melt butter. Add in brown sugar, all spice and vanilla and mix until all the brown sugar is dissolved.
Brush each plantain slice, or both sides, with glaze.
Baked in oven at 375F for about 15-20 minutes.
Notes
The plantains MUST be ripe for this recipe. You can tell they're ripe when they're almost completely black and wrinkly and the flesh should easily yield to pressure when poked. To make your plantains ripen faster, put them in a paper bag and leave them in a dark place for a few days.
Recipe by sprinkles and sauce at https://sprinklesandsauce.com/baked-plantains-brown-sugar-glaze/