Peel the banana.

Place the banana in the freezer in a plastic bag or wrapped in plastic for at least 3 hours to fully freeze.

Remove the frozen banana from the freezer.

Slice the frozen banana into thick slices.

Place the frozen banana slices in a blender or food processor.

Puree until the banana becomes smooth and creamy, resembling soft serve ice cream.

Add cocoa powder.

Gently blend until the cocoa powder is fully incorporated.

Optionally, add peanut butter or almond butter.

Blend until incorporated.

Serve immediately.

Garnish with chopped nuts, chocolate chips, shredded coconut, or fresh berries as desired.