In a large pot, heat the olive oil over medium heat. Add the diced onion and sauté for about 5 minutes until translucent. Stir in the minced garlic and cook for an additional minute until fragrant.
Add the diced carrots and potatoes to the pot. Cook for 5-7 minutes, stirring occasionally, until they begin to soften.
Stir in the corn, green beans, vegetable broth, thyme, and basil. Bring the mixture to a boil, then reduce the heat and let it simmer for about 15-20 minutes, or until the vegetables are tender.
Once the vegetables are cooked, stir in the heavy cream and season with salt and pepper to taste. Heat through for another 5 minutes, but do not let it boil.
Serve hot, garnished with fresh parsley.