Preheat oven to 350°F. Place cupcake liners into muffin pan.
Prepare macaroni as directed on package.
Chop onion, carrots, and broccoli, and toss into food processor. Blend until smooth.
In a large mixing bowl, combine cheddar, mozzarella, egg, melted butter, and olive oil. Add cooked macaroni, puréed veggies, and half the bread crumbs. Stir until just combined.
Fill each muffin cup with an even amount of macaroni mixture. Sprinkle the remaining bread crumbs over the tops of the muffins.
Bake for 30 minutes or until tops begin to brown and crisp.