How Many Calories in Lasagna? A Complete Guide by Type, Serving Size & Ingredients

Lasagna is one of the most loved comfort foods in North America and Europe. But if you’re tracking macros, managing weight, or simply curious about your calorie intake, the first question you’ll likely ask is:

How many calories in lasagna?

The answer depends on the type of lasagna, ingredients used, portion size, and whether it’s homemade or store-bought. In this comprehensive guide, we break down lasagna calories per serving, per slice, per 100g, and compare popular brands and variations.

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How Many Calories in Lasagna (Quick Answer)

On average:

• 1 slice of traditional beef lasagna (about 1/8 of a 9x13 pan): 350–500 calories

• 100g of lasagna: 130–180 calories

• 1 cup of lasagna: 280–400 calories

The total calories in lasagna vary based on cheese quantity, meat fat percentage, and sauce type.

How Many Calories in Lasagna by Type

1. How Many Calories in Beef Lasagna?

Traditional beef lasagna made with ground beef, ricotta cheese, mozzarella, and tomato sauce typically contains:

• 1 slice: 400–500 calories

• 100g: 150–180 calories

High-fat ground beef significantly increases the calorie count in lasagna.

2. How Many Calories in Cheese Lasagna?

Cheese lasagna (without meat) still contains a substantial amount of calories due to ricotta and mozzarella.

• 1 slice: 300–400 calories

• 100g: 140–170 calories

Although it contains no meat, cheese lasagna calories can be similar to meat lasagna due to dairy fat content.

3. How Many Calories in Chicken Lasagna?

Chicken lasagna, especially with Alfredo or béchamel sauce, can be calorie-dense.

• 1 slice: 350–450 calories

• Cream-based sauces increase fat and total calories.

4. How Many Calories in Vegetable Lasagna?

Vegetable lasagna made with spinach, zucchini, mushrooms, or eggplant is generally lower in calories.

• 1 slice: 250–350 calories

• 100g: 120–150 calories

If reduced cheese is used, vegetable lasagna calories drop significantly.

5. How Many Calories in Vegan Lasagna?

Vegan lasagna replaces dairy with plant-based alternatives.

• 1 slice: 220–350 calories

• Depends on vegan cheese and oil content.

6. How Many Calories in Gluten-Free Lasagna?

Gluten-free lasagna made with alternative pasta has similar calories to traditional lasagna:

• 1 slice: 350–450 calories

The difference lies in carbs, not total calories.

How Many Calories in Lasagna by Brand

Store-bought and restaurant lasagna often contain more sodium and fat.

Stouffer's Lasagna Calories

• 1 serving (1 cup): 310–350 calories

• High sodium content

Kirkland Signature Lasagna Calories

• 1 serving: 400–450 calories

• Larger portion sizes increase total intake

Lean Cuisine Lasagna Calories

• 1 tray: 250–320 calories

• Lower fat and portion-controlled

Olive Garden Lasagna Classico Calories

• 1 serving: 850–950 calories

• Restaurant portions dramatically increase calorie intake

If you're dining out, restaurant lasagna can easily exceed 800+ calories per plate.

How Many Calories in Lasagna by Serving Size

Understanding portion size is critical when calculating lasagna calorie count.

Many people underestimate how much they eat, especially when servings are large.

Macronutrients in Lasagna

Besides asking how many calories in lasagna, many people want to know the macro breakdown.

Protein in Lasagna

• 15–25g per slice

• Higher in beef and chicken versions

Carbs in Lasagna

• 30–45g per slice

• Comes mainly from pasta noodles and sauce

Fat in Lasagna

• 15–30g per slice

• Saturated fat can be high due to cheese and beef

Sodium in Lasagna

• 600–1,200mg per serving

• Frozen lasagna often contains the highest sodium levels

Is Lasagna High in Calories?

Yes, lasagna is considered a calorie-dense comfort food because it combines:

• Pasta (high-carb)

• Cheese (high-fat)

• Meat (protein + fat)

• Sauce (added sugar & oil)

However, portion control makes a major difference.

How to Make Low-Calorie Lasagna

If you're trying to reduce lasagna calories, consider these strategies:

• Use lean ground turkey instead of beef

• Replace pasta with zucchini slices (low-carb lasagna)

• Use low-fat ricotta and mozzarella

• Increase vegetable layers

• Reduce cheese quantity

With modifications, you can reduce calories to 200–300 per slice.

How Many Calories in Lasagna for Weight Loss?

You can still eat lasagna while losing weight if:

• You stay in a calorie deficit

• You control portion sizes

• You choose lighter versions

Many diet plans include moderate portions of comfort foods to improve sustainability.

Lasagna vs Other Popular Dishes (Calorie Comparison)

• Lasagna vs pizza calories: Similar per slice (250–400 calories)

• Lasagna vs spaghetti: Spaghetti with meat sauce may contain fewer calories per serving

• Lasagna vs baked ziti: Very similar calorie range

FAQs About How Many Calories in Lasagna

How many calories are in one slice of lasagna?

Typically 350–500 calories depending on ingredients.

How many calories in homemade lasagna?

Homemade lasagna contains 300–450 calories per slice on average.

Is lasagna fattening?

Lasagna is calorie-dense, but weight gain depends on total daily calorie intake.

How many carbs are in lasagna?

Most slices contain 30–45 grams of carbohydrates.

How many calories in frozen lasagna?

Frozen lasagna ranges from 250–400 calories per serving depending on brand.

Can I eat lasagna on a diet?

Yes, with portion control and balanced daily calorie intake.

Final Verdict: How Many Calories in Lasagna?

So, how many calories in lasagna?

• Standard beef lasagna: 400–500 calories per slice

• Vegetable lasagna: 250–350 calories per slice

• Restaurant lasagna: 800+ calories per serving

The key variables are portion size, cheese quantity, and meat fat content.

If you're tracking calories, always measure your portion and review the nutrition label. With smart ingredient swaps and mindful serving sizes, lasagna can fit into a balanced diet.