Slow-Roasted Tomato and Basil Pasta Sauce
A deeply flavorful pasta sauce made by slow-roasting tomatoes with garlic and fresh basil, perfect for tossing with your favorite pasta. This Italian-inspired pasta recipe (vegetarian), ready in about 165 minutes, pairs ripe plum tomatoes, olive oil, garlic cloves 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 lbs, halved ripe plum tomatoes
- 3 tbsp olive oil
- 5 cloves, smashed garlic cloves
- 1 tsp salt
- 1/2 tsp black pepper
- 1/2 cup, roughly chopped fresh basil leaves
- 1/4 tsp red pepper flakes
- 1 small, finely chopped yellow onion
- 1 tbsp tomato paste
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Equipment for this recipe
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Instructions
- Step 1: Preheat oven to 275°F. On a rimmed baking sheet, toss 2 lbs halved ripe plum tomatoes with 3 tbsp olive oil, 5 smashed garlic cloves, 1 tsp salt, and 1/2 tsp black pepper. Spread out evenly.
- Step 2: Roast tomatoes for 2 hours until they collapse and caramelize, stirring halfway through.
- Step 3: While tomatoes roast, heat 1 tbsp olive oil in a saucepan over medium heat. Add 1 small finely chopped yellow onion and sauté for 5 minutes until translucent.
- Step 4: Stir in 1 tbsp tomato paste and 1/4 tsp red pepper flakes, cooking for 2 minutes until fragrant.
- Step 5: Add the roasted tomatoes and garlic (discard any excess liquid), and cook on low for 15 minutes, stirring occasionally.
- Step 6: Remove from heat and stir in 1/2 cup roughly chopped fresh basil leaves. Use an immersion blender to pulse sauce to desired consistency or leave chunky for texture. Serve warm tossed with your favorite pasta.








