Prep the vegetables: Peel and dice the potatoes into 5mm cubes. Peel and coarsely grate the carrots. Dice the bell pepper into small pieces (~1cm). Finely dice the onions. Mince or press the garlic. Crumble the smoked tofu into small, rough pieces by hand.
Wilt the spinach: Wash the spinach and place it in a large pan with just the water clinging to the leaves. Cover and cook over medium-high heat for 2–3 minutes until fully wilted. Transfer to a colander and press out as much liquid as possible using the back of a wooden spoon. Roughly chop and set aside.
Cook the base: Heat 2 tbsp olive oil in the same large pan over medium heat. Add the diced onions and sauté for 3–4 minutes until softened and translucent. Add the minced garlic and cook for 1 minute.
Add the vegetables: Add the diced potatoes, grated carrots, and diced bell pepper. Stir in the smoked paprika, sweet paprika, oregano, thyme, nutmeg, salt, and pepper. Cook for 5–6 minutes, stirring occasionally, until the potatoes just begin to soften.
Combine everything: Remove the pan from heat. Fold in the wilted spinach, drained white beans, crumbled smoked tofu, sunflower seeds, and lemon juice. Taste and adjust seasoning. Let the filling cool for a few minutes.