Prepare to cozy up with a bowl of comforting goodness. This rustic garden soup is filled with colorful vegetables, plenty of savory herbs, and a subtle hint of spice. Best of all, it simmers effortlessly in your slow cooker, letting you focus on your day while dinner practically makes itself.

Ingredients

- 1 tablespoon olive oil
- 1 medium onion, chopped
- 2 garlic cloves, minced
- 3 carrots, peeled and sliced
- 2 celery stalks, sliced
- 2 cups diced tomatoes (canned or fresh)
- 2 cups vegetable broth
- 1 cup chopped green beans
- 1 cup corn kernels (fresh, frozen, or canned)
- 1 teaspoon dried basil
- 1 teaspoon dried oregano
- Salt and pepper to taste
- Optional: a pinch of red pepper flakes for heat
Instructions
Begin by warming the olive oil in a skillet over medium heat. Sauté the onion for about three minutes, or until it turns translucent. Add the garlic next, stirring just until fragrant—this usually takes under a minute. Transfer the sautéed onion and garlic to the slow cooker.

Pile in the carrots, celery, diced tomatoes, vegetable broth, green beans, and corn. Sprinkle in the basil, oregano, and any desired amount of red pepper flakes. Season with a little salt and pepper, knowing you can adjust the taste later. Give everything a good stir, then cover the slow cooker and set it to low for six to eight hours or high for around three to four hours.
Before serving, taste the broth and adjust the seasonings as needed. If you want a slightly thicker texture, mash a few potatoes or blend a cup of soup and return it to the pot. Once it’s ready, ladle the soup into bowls, optionally garnishing with fresh herbs or a drizzle of olive oil.
This savory vegetable soup is a treat for both seasoned home cooks and beginners alike. Packed with fiber and vitamins, it’s an excellent option for anyone looking for a nutritious, soul-warming meal. Feel free to substitute or add other veggies like zucchini, bell peppers, or potatoes, and adjust the seasonings to your preference. The beauty of this slow cooker recipe is its simplicity and versatility—perfect for meal prepping, family dinners, or a quick cozy steal for yourself on a chilly evening. Enjoy!
Nathaniel Lee is an avid cook, drawing on his decades of home cooking and fine dining experience. He is a contributing chef at Mashed, and his recipes and contributions have been featured in Tasting Table, Edible Arrangements, Insanely Good Recipes, and The Daily Meal.
