Ham and Noodle Casserole

Ingredients

• 2 cans (10.75 ounces each) condensed cream of mushroom soup
• 1/2 cup milk
• 1 large onion, chopped (about 1 cup)
• 4 cups cooked ham, cubed (about 2 pounds)
• 1 bag (16 ounces) extra-wide egg noodles, cooked and drained
• 8 ounces extra-sharp cheddar cheese, cut into pieces (2 cups)