Grandma's Ham Casserole

This is a casserole my grandmother would serve using her leftover ham from Easter. I also make it to use up leftover ham, or I buy a ham slice and make it anytime because so many people like it. Enjoy!

• Ready In: 1 hr 5 mins
• Serves: 6

Ingredients

• 1  medium cauliflower
• 4  tablespoons butter or 4  tablespoons margarine
• 1⁄3 cup all-purpose flour
• 1  cup milk
• 1  cup  shredded cheddar cheese
• 1⁄2 cup sour cream
• 2  cups  cubed cooked ham (the cubes shouldn't be too big)
• 1 (3 ounce) can  sliced mushrooms, drained
• 1  cup  soft breadcrumbs (grate bread or put in the food processor, any bread will work but I prefer a firmer one like Pepperi)
• 1  tablespoon  cold butter or 1  tablespoon margarine

Directions

1. Cut cauliflower into florets (about 3 cups). Cook in boiling salted water to cover 10 to 12 minutes, or until tender; drain and set aside.
2. Melt 4 tablespoons butter in a medium saucepan over medium-high heat. Whisk in flour until smooth. Gradually add milk, whisking constantly, until mixture begins to thicken. Lower heat to medium. Add cheese and sour cream, stirring until cheese melts. (Do not boil.).
3. Stir cauliflower, ham and mushrooms into cheese sauce; pour into a 2-quart baking dish. Sprinkle breadcrumbs evenly over casserole. Cut 1 tablespoon butter into pieces and sprinkle evenly over breadcrumbs.
4. Bake casserole, uncovered, at 350 degrees for 45 minutes.