Creating One Pot Veggie Mac and Cheese is simple with these easy-to-follow steps:

1. Heat the Pot: Begin by heating a large pot over medium heat. Add the olive oil and let it warm up.
2. Sauté Vegetables: Add your mixed vegetables to the pot. Sauté for about 3-4 minutes, or until they begin to soften.
3. Add Broth and Pasta: Pour in the vegetable broth and bring to a boil. Once boiling, add the elbow macaroni.
4. Cook the Pasta: Reduce heat to a simmer and cover the pot. Cook for about 8-10 minutes, stirring occasionally to prevent sticking. The pasta should become tender and most of the liquid should be absorbed.
5. Add Dairy: Once the pasta is cooked, stir in the milk, garlic powder, onion powder, salt, and pepper.
6. Melt the Cheese: Gradually add the cheddar and mozzarella cheese, stirring until melted and creamy.
7. Taste and Adjust: Sample your dish and adjust seasonings if necessary.
8. Serve: Remove from heat, garnish with fresh parsley if desired, and serve warm.