Melt butter and olive oil over medium heat. Add onion, garlic, and salt & pepper to taste.
Cook 1-2 minutes until translucent.
Add vegetable broth, broccoli florets, corn, bay leaf, garlic powder, and onion powder.
Cook about 20 minutes over medium heat.
Mix cornstarch with half & half and pour slowly into chowder. Cook another 10 minutes until chowder starts to slightly thicken. Remove bay leaf. Add cheddar cheese and cook until melted through.
Taste for salt & pepper
Notes
optional- top with red chili pepper flakes and extra broccoli florets