In a large skillet, cook the beef, diced onions, and minced garlic over medium heat until meat is browned.
Drain the meat.
Add in broth, pasta, water, and seasonings and bring to a boil.
Reduce heat to medium-low, cover and simmer for 15 minutes.
Add chopped pepper, zucchini, and squash to the skillet and cook for 3 minutes until pasta and vegetables are tender, stirring occasionally.
Add in the diced tomatoes and stir until evenly combined.
Reduce heat to low, and sprinkles with cheese and green onion.
Cover and let cheese melt for about 2 minutes.
Turn off heat and serve.
Notes
Adapted from Simple & Delicious July 2009. There's about 4 cups of veggies in here, feel free to replace them with any seasonal veggies you may have on hand.