Line each bacon cup with basil whole fresh basil leaves. Place the base of the leaf in the center of the cup, and let the tip stick up past the edge of the cup. Use 2-4 basil leaves, depending on size.
Place a dollop of aioli in the middle of the basil leaves.
Fill the cup with an even mix of avocado and mango chunks.
Dust everything with a fine coating of bacon powder. A sifter is great for this - just put a scoop of bacon powder in, and gently whack it over the bacon cups to produce a fine dusting.