Peel and chop all seasonal vegetables into bite-sized chunks.
Lightly heat olive oil in a pan and sauté minced garlic briefly.
Transfer vegetables to the slow cooker.
Add sautéed garlic to the mixture.
Pour vegetable broth over the vegetables.
Sprinkle dried thyme evenly.
Cover and cook on low for 6-7 hours.
Avoid opening the lid during cooking; check tenderness only near the end if needed.
Check vegetables for tenderness.
Season with salt and pepper before serving.
Adjust broth consistency if needed.
Serve warm in bowls.