Combine cake flour, olive oil or butter, ¼ of soy milk or milk (about 1.7 fl oz/ 50 ml) in a heat resistant bowl. Microwave it at 1200W for 15 seconds (Cooking time depends on the wattage of your microwave) and mix well with a whisk. Add the rest of soy milk or milk little by little into the bowl and mix.
Add Kabocha squash into the bowl (from step 2) and microwave it at 1200W for 4 minutes (Cooking time depends on the wattage of your microwave.) Combine miso into the bowl.
Transfer the Kabocha squash mixture (from step 3) into a baking dish and sprinkle bread crumbs or shredded cheese on top. Put it in a toaster oven and toast until golden brown.Tip: Miso󠄀 is added at the end to fully enjoy its aroma and richness. Instead of Kabocha squash, you can also use potatoes and taro for this dish.