In a microwave-safe dish, stir pasta, onion, and 1 tablespoon olive oil together. Microwave for 2 to 3 minutes on 30% power, stirring frequently. Cook until half the pasta is blistered.
Add the ham, broth, spinach, Velveeta, and macaroni to the pot. Cover and cook on high 2 to 3 hours, or until pasta is just tender.
Add cheddar cheese, sour cream, dijon mustard, and parsley to the crock pot and stir to combine. Continue cooking until the cheese is melted.
Salt and pepper to taste. Top with optional crumble ritz crackers.
Notes
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NOTES: Use leftover ham or a ham steak!
VARIATIONS: Swap out cheddar cheese for another favorite cheese to vary taste. Try smoked gouda, pepper jack, or mozzarella.
SERVING SUGGESTIONS: Crumble ritz crackers over the top for a crunchy topping. Garnish with fresh parsley and additional cheese.