8 to 12 ounces smoked cooked ham, diced
1 medium onion, chopped, about 1/2 cup
2 cans (14.5 ounces each) low sodium chicken broth, about 3 1/2 cups
16 ounces dried split peas, sorted and rinsed
3 carrots, thinly sliced
2 ribs celery, thinly sliced
1/2 teaspoon dried marjoram leaves
1 bay leaf
Place a medium skillet over medium heat; add butter, ham, and onion, cook until onion is tender and ham is slightly browned. Drain off excess fat.
Combine ham mixture and remaining ingredients in slow cooker. Cover and cook on LOW for 5 to 6 hours, or until split peas are tender. Remove bay leaf and let stand for 10 minutes to thicken.