Easy Low FODMAP Grilled Vegetables

I used to think grilled vegetables were off-limits when I started following a low FODMAP diet. No garlic? No onions? How could they possibly taste good?

Turns out, I was wrong. You don’t need those high FODMAP ingredients to make grilled vegetables that actually have flavor. A good marinade does most of the work—olive oil, balsamic vinegar, and a few simple seasonings create that caramelized, slightly charred taste that makes grilled veggies worth eating. Plus, vegetables like eggplant, zucchini, and bell peppers are naturally low FODMAP, so you can pile your plate high without worrying about triggering symptoms.

What Kind of Vegetables Should I Use?

The beauty of this recipe is that you can mix and match based on what’s in season or what you have on hand. While the recipe calls for eggplant, zucchini, carrots, and bell peppers, you can swap in other low FODMAP options like yellow squash, cherry tomatoes, or even firm tofu if you’re looking to add some protein. Just make sure to cut everything into similar-sized pieces so they cook evenly on the grill. If you’re using vegetables with different cooking times, like harder carrots versus softer zucchini, you might want to give the denser veggies a head start on the grill before adding the quicker-cooking ones.

Options for Substitutions

This recipe is pretty flexible, but since it’s designed to be low FODMAP, there are a few things to keep in mind when swapping ingredients:

• Low-sodium soy sauce: If you don’t have low-sodium soy sauce, tamari works great and is naturally gluten-free. You can also use coconut aminos for a soy-free option, though it’s slightly sweeter.
• Maple syrup: Honey or brown sugar can replace maple syrup in equal amounts. Just keep in mind that honey isn’t low FODMAP in large quantities, so stick to the 1 tablespoon measurement.
• Eggplant: Not a fan of eggplant? Try portobello mushroom caps or thick slices of firm tofu instead. Both grill beautifully and soak up the marinade nicely.
• Vegetables: You can mix up the veggie selection with other low FODMAP options like cherry tomatoes, bok choy, or summer squash. Just avoid high FODMAP vegetables like onions, garlic, or asparagus to keep this dish gut-friendly.
• Balsamic vinegar: Red wine vinegar or apple cider vinegar can step in for balsamic if that’s what you have on hand. The flavor will be slightly different but still tasty.

Watch Out for These Mistakes While Grilling

The biggest mistake when grilling vegetables is cutting them too thin, which causes them to fall through the grill grates or turn mushy – stick to that 1/2-inch thickness and consider using a grill basket for smaller pieces like the peppers.

Another common error is not patting the vegetables dry after marinating, as excess marinade dripping onto the flames creates flare-ups and can char your veggies before they cook through.

To get the best results, make sure your grill is properly preheated and the grates are well-oiled, and resist the urge to flip the vegetables too often – let them sit for 3-4 minutes per side to develop those nice grill marks.

Finally, remember that different vegetables cook at different rates, so start the carrots and eggplant first since they take longer, then add the zucchini and peppers a few minutes later.

What to Serve With Low FODMAP Grilled Vegetables?

These grilled vegetables are perfect alongside grilled chicken, steak, or fish – the smoky flavors from the grill really complement each other. I love serving them over quinoa or rice to make it a complete meal, and the leftover veggies are great chopped up and tossed with pasta the next day. If you’re keeping things low FODMAP, pair them with grilled shrimp and a squeeze of fresh lemon for a light summer dinner. You can also stuff them into a wrap with some feta cheese and fresh herbs, or serve them as a side dish at your next barbecue with burgers and potato salad.

Storage Instructions

Store: Grilled vegetables keep really well in the fridge for up to 4 days in an airtight container. They’re great to have on hand for quick lunches or as a side dish throughout the week. I like to make a big batch on Sunday and add them to salads, grain bowls, or just eat them cold as a snack.

Freeze: You can freeze these grilled veggies for up to 2 months, though the texture might be a bit softer when thawed. Spread them out on a baking sheet to freeze individually first, then transfer to a freezer bag to prevent them from sticking together.

Serve: These are delicious served at room temperature or cold straight from the fridge. If you want them warm, just heat them in a skillet over medium heat for a few minutes or pop them in the microwave for 30-60 seconds until warmed through.

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 600-700
• Protein: 5-7 g
• Fat: 55-62 g
• Carbohydrates: 27-32 g

Ingredients

For the marinade:

• 0.5 cup extra virgin olive oil
• 1.5 tbsp soy sauce
• 3 tbsp balsamic vinegar
• 1.5 tbsp maple syrup
• 1/2 tsp salt
• 3/4 tsp freshly cracked black pepper
• 1/2 tsp dried oregano
• 1/4 tsp red pepper flakes (optional)

For the vegetables:

• 2 cups eggplant (cut into 1-inch thick rounds)
• 1.5 cups zucchini (sliced into thick rounds)
• 2 large carrots (sliced diagonally into 1/2-inch pieces)
• 3/4 cup green bell pepper (cut into wide strips)
• 3/4 cup red bell pepper (cut into wide strips)

For the garnish:

• 1 large lemon (cut into wedges)
• 1 tbsp fresh parsley, chopped

Step 1: Prepare the Marinade Base

• 0.5 cup extra virgin olive oil
• 1.5 tbsp soy sauce
• 3 tbsp balsamic vinegar
• 1.5 tbsp maple syrup
• 1/2 tsp salt
• 3/4 tsp freshly cracked black pepper
• 1/2 tsp dried oregano
• 1/4 tsp red pepper flakes

In a large bowl, whisk together the olive oil, soy sauce, balsamic vinegar, and maple syrup until well combined.

Add the salt, black pepper, dried oregano, and red pepper flakes if using, stirring to distribute the spices evenly.

This creates your flavor foundation—the acidity and sweetness will help caramelize the vegetables on the grill while the oil ensures they don’t stick.

Step 2: Cut and Marinate the Vegetables

• marinade mixture from Step 1
• 2 cups eggplant
• 1.5 cups zucchini
• 2 large carrots
• 3/4 cup green bell pepper
• 3/4 cup red bell pepper

Cut the eggplant into 1-inch thick rounds, slice the zucchini into thick rounds, cut the carrots diagonally into 1/2-inch pieces, and cut both bell peppers into wide strips.

Add all prepared vegetables to the marinade bowl and toss gently but thoroughly to coat everything evenly.

I find that letting vegetables marinate for at least 30 minutes (or up to overnight) allows the flavors to penetrate and helps them release moisture, which actually prevents them from becoming too watery on the grill.

Step 3: Prepare and Preheat the Grill

About 30 minutes before grilling, heat your grill to medium-high heat (around 400-425°F).

Once preheated, oil the grill grates thoroughly using a folded paper towel dipped in oil—this prevents sticking and helps create those desirable grill marks.

Ensure the grates are clean and the grill is hot enough that the vegetables will sear immediately when they hit the surface.

Step 4: Grill the Vegetables

• marinated vegetables from Step 2
• reserved marinade from Step 2

Remove the vegetables from the marinade using tongs or a slotted spoon, allowing excess liquid to drip back into the bowl.

Arrange vegetables in a single layer on the hot grill grates—work in batches if needed to avoid overcrowding.

Grill for 4-5 minutes per side until you see nice caramelization and grill marks, brushing with the reserved marinade every 2-3 minutes using a basting brush.

The total cooking time will be 10-15 minutes depending on vegetable thickness and grill temperature.

I like to move the vegetables occasionally to prevent charring in one spot, while still allowing those beautiful caramelized flavors to develop.

Step 5: Plate and Finish

• grilled vegetables from Step 4
• 1 large lemon
• 1 tbsp fresh parsley, chopped

Transfer the grilled vegetables to a serving platter and arrange them in an appealing way.

Squeeze fresh lemon wedges over the top to brighten the flavors, and garnish with chopped fresh parsley for a pop of color and freshness.

Serve warm or at room temperature—these vegetables are delicious either way and actually develop even deeper flavors as they cool.