Preheat the oven to 180°C (350°F).
Break the cauliflower into florets. Boil in salted water (2 teaspoons salt) for about 5–7 minutes until tender but not mushy. Drain and set aside.
In a large bowl, beat 2 eggs. Add sour cream, 4 tablespoons breadcrumbs, salt, and pepper. Stir to combine.
Fold the cooked cauliflower into the mixture, coating it evenly. Pour into a greased baking dish.
In a separate bowl, whisk 2 eggs with milk. Stir in grated cheese. Pour this mixture over the cauliflower in the baking dish.
Sprinkle with 3 tablespoons of breadcrumbs and drizzle with sunflower oil.
Bake for 35–40 minutes or until golden and bubbling on top.
While the bake is in the oven, prepare the salad.
In a mixing bowl, combine shredded cabbage, grated beets, dill, garlic, sour cream, and mayonnaise. Mix well and chill until serving.
Serve the cauliflower bake hot, paired with a side of the beet-cabbage salad.