- Heat garlic-infused oil in a saucepan over medium heat.
- Add spring onion greens and sauté 2 minutes until fragrant (do not brown).
- Stir in tomato paste and cook 1 minute to deepen flavor.
- Add crushed tomatoes, oregano, dried basil, salt, pepper, sugar, and water. Stir well.
- Bring to a gentle simmer, then reduce heat to low.
- Simmer uncovered for 20 minutes, stirring occasionally, until thickened.
- Taste and adjust salt/pepper. Stir in fresh basil off the heat.
- Serve ½ cup sauce over 1 cup cooked GF pasta to stay within Monash portions.
Low FODMAP Pasta Sauce (30-Minute Marinara, No Garlic or Onion)
Total Time
30 min
Servings
4
Prep
5 min
Cook
25 min


A rich, garlicky-tasting low FODMAP marinara made **without onion or garlic** — using garlic-infused oil and spring onion greens for full flavor. Ready in 30 minutes, freezer-friendly, and Monash-aligned per serve.  ## Why This Sauce Is Low FODMAP - **Garlic-infused oil** delivers garlic flavor without fructans (fructans aren't oil-soluble) - **Spring onion greens only** (no white bulbs) - **Canned tomatoes** limited to ½ cup (100 g) per serve — Monash safe - **No onion, no garlic cloves, no honey** See our [FODMAP Stacking Guide](/blog/fodmap-stacking-guide) to plan portions across a full pasta meal. ## Monash Portion Safety | Ingredient (per serve) | Amount | Status | |------------------------|--------|--------| | Canned tomatoes | ½ cup (100 g) | 🟢 Low | | Tomato paste | 2 tbsp | 🟢 Low | | Fresh basil | Unlimited | 🟢 Low | | Spring onion greens | Unlimited | 🟢 Low | | Garlic-infused oil | Unlimited | 🟢 Low | **Safe serve:** ½ cup sauce over 1 cup cooked GF pasta. ## Variations 1. **Bolognese:** Add 250 g browned ground beef or turkey 2. **Arrabbiata:** Add ¼ tsp red pepper flakes 3. **Vodka sauce:** Stir in 3 tbsp lactose-free cream + 2 tbsp vodka at end 4. **Roasted red pepper:** Blend in 1 roasted red pepper (½ cup max) ## High → Low FODMAP Swap Chart | Instead of | Use | |------------|-----| | Garlic cloves | Garlic-infused olive oil | | Onion | Spring onion greens (dark parts only) | | Jarred marinara | Homemade with canned tomatoes | | Regular pasta | GF pasta (rice, corn, quinoa) | | Parmesan (>40 g) | Parmesan 40 g max per serve | ## Common Mistakes - **Using whole garlic cloves** — even removed later, fructans leach into the sauce - **Overshooting tomato portion** — >¾ cup canned tomatoes per serve tips into moderate - **Store-bought marinara** — nearly all contain onion & garlic - **Adding regular onion** — swap for spring onion greens only ## Make-Ahead & Storage - **Fridge:** 5 days in airtight jar - **Freezer:** 3 months — freeze in ½-cup portions for easy meals - **Reheat:** Gentle simmer with 1 tbsp water to loosen ## Serve With - [Low FODMAP Chicken Stir Fry base swap](/recipe/low-fodmap-chicken-stir-fry) - [Roasted Low FODMAP Vegetables](/recipe/low-fodmap-roasted-vegetables) — spoon sauce over - GF spaghetti + parmesan (40 g) - [Low FODMAP Dinner Hub](/low-fodmap-dinner-recipes) **Sources:** [Monash University](https://www.monashfodmap.com/), [Kate Scarlata RDN](https://www.katescarlata.com/) *Reviewed by our editorial team. Informational only — not medical advice.*
Ingredients
- 3 tbsp garlic-infused olive oil
- ½ cup spring onion greens, finely sliced (green parts only)
- 1 can (400 g / 14 oz) crushed tomatoes
- 3 tbsp tomato paste
- 1 tsp dried oregano
- 1 tsp dried basil
- ½ tsp salt
- ¼ tsp black pepper
FODMAP Notes
Made without onion or garlic. Uses garlic-infused oil, spring onion greens, and ½-cup canned tomato portions per serve.
Practical Low FODMAP Notes for Low FODMAP Pasta Sauce (30-Minute Marinara, No Garlic or Onion)
Low FODMAP Pasta Sauce (30-Minute Marinara, No Garlic or Onion) is most useful when the serving size stays consistent, because FODMAP tolerance often changes when portions creep upward. Use the listed servings as the starting point, then portion leftovers before storing so the meal stays predictable on busier days. If you are cooking for family members who do not follow a low FODMAP plan, keep onion, garlic, wheat-heavy sides, and high-FODMAP sauces separate at the table instead of mixing them into the main recipe.
Ingredient notes: this recipe uses 3 tbsp garlic-infused olive oil, ½ cup spring onion greens, finely sliced (green parts only), 1 can (400 g / 14 oz) crushed tomatoes, 3 tbsp tomato paste, 1 tsp dried oregano, 1 tsp dried basil, ½ tsp salt, ¼ tsp black pepper, 1 tsp sugar (balances acidity), ½ cup water, ¼ cup fresh basil leaves, torn, Optional: ¼ tsp red pepper flakes. Check packaged ingredients carefully, especially broths, spice blends, gluten-free mixes, condiments, and dairy substitutes, because garlic powder, onion powder, inulin, chicory root fiber, high-fructose sweeteners, and wheat-based thickeners can appear in small print. When unsure, choose plain versions and add flavor with garlic-infused oil, fresh herbs, citrus, ginger, chives, scallion greens, or low FODMAP spice blends.
For IBS-friendly meal prep, cool leftovers quickly and refrigerate in shallow containers. Reheat only the portion you plan to eat, and add fresh herbs, lemon juice, or a small drizzle of garlic-infused oil after reheating to bring the flavor back without relying on high-FODMAP aromatics. If a recipe feels too rich during a flare, pair it with a simple low FODMAP side such as rice, potatoes, quinoa, lettuce, cucumber, carrots, or another tolerated vegetable.
This recipe is intended for general low FODMAP education, not medical advice. Individual tolerance varies, so use your dietitian’s guidance and your own symptom history when deciding whether to repeat, increase, or modify a serving. During the elimination phase, keep portions conservative; during reintroduction, test one FODMAP group at a time so you can clearly identify personal triggers.
Helpful next steps: use the FODMAP Food Checker before adding new ingredients, try the Ingredient Swap Tool when a sauce or seasoning is questionable, and save recipes that worked well so you can build a reliable rotation of breakfasts, lunches, dinners, and snacks.
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