Preheat oven to 350°F and grease or line a 9×5 inch loaf pan.
In large bowl, whisk together bananas, sugars, melted butter, eggs, vanilla, and yogurt until smooth.
In another bowl, whisk flour, baking soda, and salt.
Combine dry ingredients into wet ingredients and stir just until combined.
Fold in mini chocolate chips gently and top with extra chips, if using.
Pour batter into loaf pan and smooth the top.
Pressure cook at high pressure for 40–45 minutes with 1 cup water and pan on trivet. Let naturally release for 10–15 minutes.
Cool in the pan 10 minutes, then transfer to wire rack to cool fully before slicing.
Notes
You can substitute sour cream for yogurt; add nuts or cinnamon for an extra twist. Store in airtight container, refrigerate up to 7 days or freeze for later.