Prepare the spinach. Thoroughly clean and wash fresh spinach and remove any sand. Remove coarse leaf veins. Gradually transfer to a saucepan and heat until it collapses. Thaw frozen spinach or briefly heat it in the microwave so that it can be spread better in the casserole.
For the sauce, bring the sour cream and cream to the boil in a saucepan. Season with salt and pepper vigorously.
Layer everything in a baking dish. Start with the potatoes, then spinach, bacon, potatoes, spinach, bacon, potatoes and bacon. Pour the sauce over the casserole and then spread the cheese on top.
Bake in a hot oven at 180 ° C for about 40 minutes.