Portobello 'Steaks' and Butter Bean Mash

Is this very spicy? I really want to make it but I am bad with spicy food so I am a bit scared of trying. If so, would lowering the amount of chili ruin the recipe? Thank you :)

This recipe does take a bit of time for a keen amateur (i.e. me) but it is worth the wait. The mushrooms are rich and absolutely packed with flavour. My mouth's watering just thinking about it. You will need a blender/food processor though!