Combine ingredients in a high-speed blender. For easier blending, blen he fresh ingredients together first. Then add the frozen ingredients and blend those in.
The mixture will be very thick since we're making a smoothie bowl. If/when the blender gets stuck, just stop it and use a spoon or spatula to stir the mixture and push everything back down towards the blades. Do this as many times as needed until you get a super thick, smooth, smoothie bowl. Add a little liquid if needed but not too much. Continue blending until smooth.
Pour the smoothie into 2 small bowls (or 1 large bowl). Gently spread it out evenly in the bowl(s) using a spoon. Add toppings.
Video
Notes
To freeze the bananas, slice 2-4 peeled bananas depending on size and place them on a parchment paper-lined baking sheet. Put the baking sheet in the freezer for at least an hour. Use the bananas from there or store them in a freezer-safe bag or airtight container in the freezer until ready to use.