Roasted Tomato and Onion Soup
A deeply savory soup featuring slow-roasted tomatoes and onions, simmered with aromatic herbs for a comforting, umami-rich bowl. This american-inspired soups (vegan) ready in about 65 minutes pairs Tomatoes, Yellow onion, Olive oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 120 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 3 medium Tomatoes
- 1 medium Yellow onion
- 2 tbsp Olive oil
- 2 cloves Garlic
- 4 cups Vegetable broth
- 1/2 tsp Salt
- 1/4 tsp Black pepper
- 1/4 cup Fresh basil
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Instructions
- Step 1: Preheat oven to 425°F. Halve 3 medium tomatoes and quarter 1 medium yellow onion, then toss with 2 tbsp olive oil in a baking dish. Roast for 25 minutes until caramelized.
- Step 2: Transfer roasted tomatoes and onions to a blender with 2 minced garlic cloves, blend until smooth, then return to a pot. Stir in 4 cups vegetable broth, 1/2 tsp salt, and 1/4 tsp black pepper.
- Step 3: Simmer over medium heat for 20 minutes. Stir in 1/4 cup chopped fresh basil and serve warm.
Frequently asked questions
How long does Roasted Tomato and Onion Soup take to make?
Total time is about 65 minutes (20 min prep + 45 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.
How do I store leftover Roasted Tomato and Onion Soup?
Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep tomatoes from drying out.
Can I substitute ingredients in Roasted Tomato and Onion Soup?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Roasted Tomato and Onion Soup for a different number of people?
The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
Is Roasted Tomato and Onion Soup vegan?
Yes — this recipe is tagged vegan based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
What others are saying
- ★★★★★
Served with crusty bread for a cozy dinner. The balance of sweet onions and tangy tomatoes was divine.
- ★★★★★
Simple but elevated the classic tomato soup. Roasting the veggies made all the difference.
- ★★★★★
My family devoured this soup in minutes! The roasted tomato depth is perfect for a cold evening.
