Prepare the vegetables for the stew: cut the broccoli florets roughly to the same size, finely chop the garlic cloves and cube the potatoes, the onion and the butternut squash.
Heat the olive oil in a pan, add the chopped vegetables, the bay leaves and season with salt and pepper. Sauté on medium-high heat until the vegetables start to caramelize, then add the red wine.
Allow the wine to evaporate (2-3 minutes), then add the tomato puré and the vegetable broth, and simmer the soup for around 20 minutes.
Prepare the dumplings. Combine the dry ingredients in a bowl (flour, baking powder, salt, sage and smoked paprika) with the vegetable suet until they turn into a crumbly texture. Add cold water a bit at the time until the dough comes together in a ball. Form 12 dumplings the size of a ping pong ball.
Stir the cannellini beans with their juice into the stew. Bring it to a boil then arrange the dumplings on top of the veggies (add more vegetable stock if too dry).
Simmer for another 20 minutes (or more, if the vegetables are still hard) until the dumplings puff up.