Instructions:

Pasta Preparation: Cook pasta as per package instructions until al dente. Drain and set aside.

Sauce Creation: Melt butter in a large saucepan over medium heat, add flour and stir for 1-2 minutes until a light golden hue appears. Gradually whisk in milk, continuing to stir until sauce thickens. Remove from heat and incorporate sour cream, Dijon mustard, and garlic powder.

Oven Preheating: Set your oven to 375°F (190°C).

Layering the Casserole: In a 9×13-inch baking dish, create the first layer with half of the pasta, sauerkraut, Polish sausage, and half of the Swiss cheese. Gently pour and spread half of the prepared sauce over this layer.

Repeat: Continue the layering with the remaining pasta, sauerkraut, sausage, cheese, and sauce.

Bake to Perfection: Place the casserole in the preheated oven and allow it to bake for 30 minutes, or until the cheese transforms into a melted, bubbly masterpiece

Serve and Enjoy: Allow the casserole to cool slightly before serving. Immerse into the delightful Polish Pasta Casserole and enjoy!