Prepare and chop all the vegetables before cooking. Set aside.
In a stockpot, heat olive oil on medium-high heat. Add onion, garlic, thyme and season with kosher salt and ground pepper. Cook until fragrant, about 1 minute.
Add carrots, potatoes, green beans, celery, corn, kale and diced tomatoes. Stirring for about 1 minute. Then, add vegetable broth and Italian seasoning.
Bring to boil and cook soup until vegetables are tender, about 15 minutes. Stirring occasionally.
Bring to simmer. Serve immediately.