Asparagus Casserole

2 - 10 ounce cans sliced asparagus
1 - 10 ounce can cream of celery soup
2 hard boiled eggs, thinly sliced
1 cup grated cheddar cheese
1/2 cup coarsely crushed saltines or Ritz crackers
1 teaspoon butter

Place drained asparagus in lightly buttered slow cooker/Crock Pot. Combine soup and cheese. Top asparagus with sliced eggs, soup mixture, then the cracker crumbs. Dot with butter. Cover and cook on low for 4 to 6 hours.