Dried Beef Casserole with White Beans and Spinach Sauce

Soak the white beans in cold water overnight

Cut the dried beef into cubes and cook in a pressure cooker with half the onion and olive oil

Drain and transfer to a processor

Add 1 egg and all-purpose flour

Process well and reserve

Cook the white beans in salted water until tender

Combine tomato sauce, mushrooms, remaining onion, and parsley

Cook with the lid removed until all liquid evaporates and forms a thick mixture

Season with salt and black pepper

In a greased baking dish, spread the beef

Place the bean mixture on top and smooth with the back of a spoon

Bake in a medium preheated oven for about 20 minutes or until starting to dislodge from the pan

Spinach Sauce: Melt butter, add flour dissolved in milk, and cook over low heat until thickened

Add blanched spinach leaves and season with salt and black pepper

Blend well and strain through a fine-mesh sieve

Serve with the casserole cut into slices.