This tomato-based soup is every bit as satisfying but much lighter than cream-based chowders. Potatoes and white fish (use any variety) provide substance and flavor. Serve this speedy weeknight soup with lemon wedges and crackers on the side.
Heat a Dutch oven over medium heat. Add cooking oil and carrots, garlic and white parts of green onions with a pinch of salt. Saute until onions are tender, ~3 minutes. Add thyme and cook for 1 minute more.
Add potatoes, tomatoes (including juice) and stock. Cover and bring to a boil and then simmer covered until potatoes are nearly tender, ~10 minutes (more or less depending on size of potato pieces).
Gently stir in tilapia pieces and continue simmering uncovered until tilapia and potato are both cooked through, ~5 minutes more. Season to taste with salt and pepper (or a bit of hot sauce if you’d like).
Serve chowder topped with green parts of green onions and with lemon wedges and crackers on the side. Enjoy!