Kielbasa and Hash Brown Egg Casserole

Heat oven to 350°F. Spray 3-quart oval or 13x9-inch baking dish with cooking spray. Slice Polska kielbasa in half lengthwise, then in 1/2-inch slices.

In 10-inch nonstick skillet, cook Polska kielbasa over medium-high heat 3 to 5 minutes or until browned; remove from skillet. Reduce heat to medium. In same skillet, cook onion and garlic 3 to 5 minutes, stirring frequently, until slightly softened. Add spinach to skillet; cook about 1 minute or until starting to wilt.

Layer half of the hash browns in baking dish. Add 1 1/2 cups of the cheese, the Polska kielbasa, spinach mixture and remaining hash browns. In large bowl, beat eggs and milk with whisk; beat in mustard, salt and pepper. Pour over hash browns; top with remaining 1/2 cup cheese.

Bake 50 to 55 minutes or until golden brown and center is just set. Let stand 15 minutes; top with sliced green onions before serving. Serve with horseradish.