There’s nothing wrong with hiding veg and offering visible veg as well. Don’t give up offering with no pressure, even though the waste is hard to watch. Offer him first and save what he doesn’t eat for yourself either at that meal or later.
Cannellini beans mash beautifully into potatoes. You can put cheese in them to mask it further if you want but not needed. With Parmesan it’s actually super tasty and great for adults too
Cannelini beans will also blend very nicely and flavourlessly into a tomato based pizza sauce, pasta sauce, soups.
Cannellini also blend flavourlessly into smoothies. Add hemp seeds, chia, flaxseed oil etc for healthy fats.
Steamed cauliflower will also blend flavourlesly into a smoothie if it’s a small amount. Freeze portions of smoothie for ice lollies.
if you google the blog “MJ and Hungryman” her muffin recipes are excelllent. The carrot and banana one can accomodate a huge amount of veg. I have found all you need to do is make sure the fruit/veg total adds up to the correct weight -I think it’s 430g. You can use the grated beetroot, carrot, parsnip, mashed sweet potato, pumpkin, cooked apple, banana. It all works well, try different combos just have a mix of sweet fruit/veg in there. I skip the syrup/sugar in the recipe and they’re still great. I also use some almond flour to up the protein.
Make your own chicken nuggets and put ground nuts in the crumb.
if they eat avocado on a sandwich, blend some lemon, edamame and cannellini beans with salt and pepper and spread onto sandwiches that you toast with melted cheese. Even my husband didn’t know it wasn’t really avocado.
Pancake batter can easily take a whole carrot using a fine grater. Mash in banana too.
Mix cottage cheese (super high protein) into cooked berries with chia seeds to make a fruity creamy spread and put it on the pancakes.