Slow-Simmered Tomato & Herb 'Imbiber' Stew

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · Published 2026-04-05 · Updated 2026-04-05

A deeply flavorful vegetable stew where tomatoes and herbs absorb slow-cooked richness for 6 hours, creating a soul-nourishing meal. This mediterranean-inspired slow cooker (vegetarian) ready in about 370 minutes pairs Olive Oil, Chopped Onions, Chopped Carrots for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 110 calories and feeds 6, 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

• 2 tbsp Olive Oil
• 1 cup Chopped Onions
• 1 cup Chopped Carrots
• 1 cup Chopped Celery
• 28 oz Canned Diced Tomatoes
• 2 cups Vegetable Stock
• 1 tsp Dried Oregano
• 1 tsp Dried Thyme
• 1 tsp Salt
• 0.5 tsp Black Pepper

Instructions

1. Step 1: Heat 2 tbsp olive oil in a heavy-bottomed pot over medium heat until shimmering. Add 1 cup chopped onions, 1 cup chopped carrots, and 1 cup chopped celery, stirring frequently for 5 minutes until softened and translucent.
2. Step 2: Stir in 28 oz canned diced tomatoes (with juices), 2 cups vegetable stock, 1 tsp dried oregano, 1 tsp dried thyme, 1 tsp salt, and 0.5 tsp black pepper. Bring to a gentle simmer.
3. Step 3: Reduce heat to low, cover, and simmer uncovered for 6 hours, stirring every hour until vegetables are meltingly tender and flavors have deepened.