To prepare the double boiler, bring 1-2" of water to a boil in a pot.
Slice bananas into 1" chunks and arrange on a parchment paper-lined baking sheet. Drop a spoonful of peanut butter between every two banana slices to create sandwiches.
Add a bowl to the double boiler to melt chocolate chips with coconut oil. Stir until chocolate is completely melted and smooth.
There are two ways you can get the chocolate on the banana bites. One way is to work quickly with tongs, dipping banana bites into the chocolate. The other way is to leave banana bites on the baking sheet and spoon melted chocolate on top.
Before the chocolate sets, add topping. Pop the peanut butter banana bites in the freezer for at least 30 minutes before serving frozen.