1 piece (medium) of Zucchini Au Gratin (120 g) has 132 calories. That works out to 110 calories per 100 g. It contains 9 g of carbs, 5 g of protein, 8.6 g of fat and 2 g of fiber. Its 168 µg of Vitamin A covers 19% of the Daily Value. Its glycemic index is 40 (low), so it raises blood sugar slowly.

What is Zucchini Au Gratin?

Zucchini Au Gratin layers sliced zucchini in a baking dish with a creamy sauce and cheese, then bakes it until the top is golden and bubbling. Gratin is a French-style preparation, though versions of this comforting vegetable bake are made in home kitchens around the world.

The zucchini softens as it cooks, while the sauce stays rich and the cheese forms a savory, lightly crisp topping. Serve it as a side with roast meat or a salad, or enjoy a portion as a light main. It brings vegetables together with dairy for a filling dish; use a lighter hand with the sauce and cheese if you’d like a less rich result.

Zucchini Au Gratin Nutrition Facts

Selected: 100 g

110

KCAL / 100G

Carbs

7.5g

· 3% DV

Protein

4.2g

· 8% DV

Fat

7.2g

· 9% DV

Fiber

1.7g

· 6% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 27% · Protein 15% · Fat 58%

Zucchini Au Gratin Vitamins & Minerals

Vitamins

Vitamin A

140µg · 16% DV

Vitamin K

16µg · 13% DV

Vitamin C

10mg · 11% DV

0.13mg · 10% DV

Minerals

Calcium

110mg · 11% DV

Sodium

260mg · 11% DV

Phosphorus

78mg · 11% DV

Zinc

1mg · 9% DV

How Nutritious Is Zucchini Au Gratin?

Nutrient density

Medium

55/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Medium

44/ 100

An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.

Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.

Zucchini Au Gratin Glycemic Index

GLYCEMIC INDEX

Low

0 Low5570100

GLYCEMIC LOAD

Low

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off Zucchini Au Gratin

To burn the 110 calories in 100 g:

🚶

27min

Walking (5 km/h)

🏃

11min

Running (8 km/h)

🚴

15min

Cycling

🏊

13min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

Is Zucchini Au Gratin Processed?

NOVA 3

Processed

1. Unprocessed

2. Minimally Processed

3. Processed

4. Ultra-Processed

NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.

Does Zucchini Au Gratin Contain Allergens?

Contains these allergens:

Gluten free

Dairy yes

Eggs free

Peanuts free

Tree nuts free

Fish free

Soy free

Sesame free

Which Diets Is Zucchini Au Gratin Good For?

Vegan

— Not suitable

Vegetarian

✓ Suitable

Gluten-Free

— Not suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

— Not suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

— Not suitable

Low FODMAP

— Not suitable

Zucchini Au Gratin Fat Profile

SATURATED

3.5g

MONOUNSATURATED

2.1g

POLYUNSATURATED

0.3g

⚖️

Omega 6:3 ratio 3.3:1

Below the ideal 4:1 — a good omega balance.

Compare Zucchini Au Gratin

🥒🧀vs🍅

Zucchini Au Gratin vs Tomato92 kcal more per 100 g

→🥒🧀vs🥗

Zucchini Au Gratin vs Mixed Green Salad92 kcal more per 100 g

→🥒🧀vs🫑

Zucchini Au Gratin vs Red Pepper79 kcal more per 100 g

→🥒🧀vs🥄

Zucchini Au Gratin vs Boiled Beetroot66 kcal more per 100 g

→

Foods Similar to Zucchini Au Gratin

🍅

Tomato

18 kcal

🥗

Mixed Green Salad

18 kcal

🫑

Red Pepper

31 kcal

🥄

Boiled Beetroot

44 kcal

🫑

Green pepper

20 kcal

🥗

Potato Salad

110 kcal

🥗

Arugula

25 kcal

🥕🥦🍆

Oven-Roasted Mixed Vegetables

65 kcal

Frequently Asked Questions About Zucchini Au Gratin

What is zucchini au gratin?

Zucchini au gratin is a baked dish of sliced zucchini covered with a creamy sauce and cheese, then cooked until bubbling and golden. Recipes vary: some use béchamel, while others use cream, and many add breadcrumbs for a crisp top.

How do you keep zucchini au gratin from getting watery?

To keep zucchini au gratin from turning watery, draw moisture from the slices before baking. Salt them briefly and pat them dry, or sauté them lightly first. A thick sauce and an uncovered baking dish also help excess moisture evaporate.

What cheese is best for zucchini au gratin?

Gruyère is a classic choice for zucchini au gratin because it melts smoothly and browns with a savory flavor. Cheddar gives it a sharper taste, while Parmesan adds a salty, crisp finish. You can combine cheeses, using a good melter beneath the topping.

Do you peel zucchini for zucchini au gratin?

No, zucchini usually does not need peeling for zucchini au gratin. Its tender skin softens during baking and helps the slices hold their shape. Wash the zucchini well and trim the ends; remove only any tough or damaged patches of skin.

Can you make zucchini au gratin ahead of time?

Yes, you can assemble zucchini au gratin ahead and refrigerate it before baking. Zucchini releases moisture as it sits, so dry the slices well and keep the sauce fairly thick. Bake it until the center is hot and the cheese is browned before serving.

Can you use yellow squash instead of zucchini in zucchini au gratin?

Yes, yellow summer squash can replace some or all of the zucchini in zucchini au gratin. It has a similar tender texture, but it can release just as much moisture, so slice it evenly and dry or briefly sauté it before layering.

Can zucchini au gratin be made without béchamel sauce?

Yes, zucchini au gratin can be made without béchamel. Use a mixture of cream, milk, and cheese, or spoon a modest amount of cream over the zucchini before adding the topping. Keep the sauce thick enough to coat the slices rather than pool in the dish.

Can you freeze zucchini au gratin?

Yes, zucchini au gratin can be frozen, though the zucchini may soften and the creamy sauce may separate slightly after thawing. Freeze cooled portions in airtight containers, thaw them in the refrigerator, and reheat in the oven to restore some browning.

How do you reheat zucchini au gratin?

Reheat zucchini au gratin in an oven until hot throughout; this keeps the cheese topping better than microwaving. Cover it loosely if the top is already browned and is darkening too quickly. A microwave works for a quick portion but makes the topping softer.

What goes well with zucchini au gratin?

Zucchini au gratin pairs well with a crisp green salad, roasted chicken, or grilled fish. Its creamy, cheesy topping makes it a rich side, so fresh vegetables or a simple protein balance the plate without competing with the zucchini.

Have another question about Zucchini Au Gratin?

Ask the AI nutrition coach — calories, portions, alternatives and more, answered in seconds in the app.

Scan calories with your camera

Instant AI nutrition analysis

Nutrition data compiled from USDA FoodData Central and scientific sources.

· Last updated: September 24, 2026