Add the frozen cherries and frozen banana to the blender first, this keeps the blades from stalling on ice.
Add the Greek yogurt, milk, honey, and vanilla extract on top of the frozen fruit.
Blend on low for 10 seconds to break up the fruit, then on high for 30 to 45 seconds, scraping down the sides once, until thick and smooth. The mixture should hold a spoon standing upright, if it's soupy, add a few more frozen cherries and blend again.
Divide the mixture between two bowls, 16 oz / 480 ml each, using a spatula to scrape the blender clean.
Swirl 1 tablespoon of almond butter into each bowl.
Sprinkle 1 tablespoon of chia seeds and 1/4 cup granola over each bowl.
Top with the reserved whole cherries and serve right away, before the toppings sink.