Add vegetable oil and ground beef in a large stock pot. Cook on med-high heat until ground beef is browned, about 5 minutes
Add minced garlic and onion. Stir together and cook for about 3 minutes or until onions are translucent
Lower heat to medium and add mushrooms, zucchini, carrots, diced tomatoes and pasta sauce. Mix well. The chili will look very thick - do not worry, it will thin as the vegetables cook. Let cook for about 5-10 minutes. Meanwhile, drain and rinse the can of red kidney beans. Note: this is a good time to rinse the cans with water over the beans in preparation to put them for recycle and make double use of the water for rinsing both the cans and the beans
Add red kidney beans (drained and rinsed), salt, pepper and chili powder. Stir together and let simmer on low heat for at least 30 minutes. Stir frequently
Serve hot or divide chili in mason jars and let cool for storage in the fridge or freezer. Note: Chili can also be frozen in the mason jars to be eaten at a later date