Broccoli Cheddar Lasagna Soup Recipe

I decided to make this Broccoli Cheddar Lasagna Soup on a busy weeknight, and it was an instant hit with everyone at the table! Combining the comforting feel of classic broccoli cheddar soup with the heartiness of tender lasagna noodles and juicy rotisserie chicken is a pure stroke of culinary genius.

I loved how quickly it came together without requiring hours of standing over a hot stove. Every spoonful delivers a rich, cheesy, and deeply satisfying bite that makes your whole kitchen smell heavenly. If you want a cozy dinner that feels like a warm hug in a bowl, this recipe is definitely for you!

Ingredients

Choosing the right ingredients ensures your soup attains that thick, velvety texture and rich flavor balance.

• Butter (1 Tbsp) – Creates a rich, savory fat base to gently sauté the onions and unlock their natural sweetness.
• Diced onion (½ cup) – Adds essential aromatic flavor to the soup base; sweet yellow or white onions work wonderfully.
• Chicken broth (4 cups) – Serves as the savory liquid foundation; use low-sodium broth to better manage overall salt levels.
• Large carrot (1, peeled and sliced) – Delivers a subtle natural sweetness, pleasant texture, and bright pop of color.
• Frozen broccoli florets (1 12-oz bag) – Super convenient and easy; using frozen broccoli saves prep time and cooks up perfectly tender.
• Chopped rotisserie chicken (2 ½ cups) – Adds hearty protein and rich flavor; store-bought rotisserie chicken keeps prep completely hassle-free.
• Mini lasagna noodles or rotini (3 oz) – Brings that fun lasagna soup twist; mini lasagna ribbons or spiral rotini hold onto the cheesy broth beautifully.
• Garlic powder (1 tsp) – Distributes an even, fragrant garlic taste throughout the broth without the risk of burning fresh pieces.
• Black pepper (¼ tsp) – Delivers a gentle woody warmth to complement the sharp cheddar cheese.
• Red pepper flakes (Pinch) – Adds an optional, very subtle hint of heat to wake up the creamy dairy flavors.
• Kosher salt (1 tsp) – Enhances all the delicious natural flavors of the vegetables and broth; adjust to taste at the very end.
• Cornstarch (3 Tbsp) – Paired with equal parts cold water to create a slurry that thickens the broth into a velvety consistency.
• Half and half (1 cup) – Provides a lush, creamy texture that is rich without feeling overly heavy like heavy cream.
• Shredded cheddar cheese (4 oz) – Sharp cheddar provides the best cheesy punch; grate cheese fresh from a block for a smooth, clumpless melt.

Note: Serves 4 to 6 hearty bowls (about 4 to 6 full servings).

Variations

This soup is wonderfully versatile, allowing you to easily adjust ingredients to match what you have on hand or your dietary needs.

• Dairy-Free Option: Use a plant-based butter alternative, unsweetened oat milk or coconut milk in place of half and half, and your favorite dairy-free sharp cheddar.
• Gluten-Free Adaptation: Swap standard pasta for your favorite gluten-free rotini or gluten-free broken lasagna sheets, ensuring your broth is certified gluten-free as well.
• Vegetarian Version: Omit the rotisserie chicken and substitute the chicken broth with a rich vegetable broth for a delicious meatless soup.
• Extra Veggie Boost: Toss in extra vegetables like diced celery, cauliflower florets, or a handful of fresh baby spinach right before serving.

Cooking Time

Here is a complete breakdown of the time needed for both Instant Pot and Slow Cooker methods.

• Prep Time: 10 minutes
• Cooking Time: 15 minutes (Instant Pot) / 2 hours 25 minutes (Slow Cooker)
• Total Time: 25 minutes (Instant Pot) / 2 hours 35 minutes (Slow Cooker)

Equipment You Need

Having these key kitchen appliances and tools ready will make your soup prep entirely effortless.

• Instant Pot or Slow Cooker – Used to pressure cook or slow simmer the soup ingredients to tender perfection.
• Skillet (if using Slow Cooker) – Used to sauté the onions in butter before transferring them into the slow cooker basin.
• Small mixing bowl and fork – Used to whisk the cornstarch and cold water into a smooth slurry without lumps.
• Cheese grater – Used to freshly shred the block cheddar cheese so it melts cleanly into the warm soup.

How to Make Broccoli Cheddar Lasagna Soup Recipe?

Whether you choose the speedy pressure cooker approach or the hands-off slow cooker method, making this soup is straightforward and rewarding.

Sauté the Aromatics and Build the Base

Starting with well-sautéed onions builds an amazing layer of flavor right at the beginning of cooking. If using an Instant Pot, turn it to the sauté setting, melt the butter when hot, and sauté the diced onion for 3 minutes until softened. (For the slow cooker method, sauté the onion in butter in a pan over medium-high heat for 3 minutes, then transfer to the slow cooker insert). Pour in the chicken broth and scrape any browned bits off the bottom to ensure nothing sticks during cooking.

Pressure Cook or Slow Simmer the Ingredients

Combining the vegetables, chicken, pasta, and seasonings allows all the delicious flavors to meld together seamlessly. Stir in the sliced carrot, frozen broccoli florets, chopped rotisserie chicken, mini lasagna noodles, garlic powder, black pepper, red pepper flakes, and kosher salt. For the Instant Pot, lock the lid, set to sealing, and cook on low pressure or SOUP setting for 1 minute, followed by a 5-minute natural release before venting. For the slow cooker, cover and cook on high for 2 hours, then stir in the noodles and cook for an additional 20 minutes until tender.

Thicken, Temper, and Melt the Cheese

Finishing the soup properly creates that signature velvety texture without curdling the dairy elements. Whisk the cornstarch with 3 tablespoons of cold water in a small bowl until smooth, then stir it into the hot soup and simmer on sauté (or warm slow cooker setting) for a couple of minutes until thickened. Ladle 1 cup of the hot soup into a bowl with the half and half to temper it, then pour the tempered cream mixture into the pot along with the shredded cheddar cheese, stirring until completely melted and smooth.

Additional Tips for Making this Recipe Better

A few personal kitchen insights can make your soup turn out consistently rich and silky every single time.

• Temper your cream before adding: I always mix a ladle of warm soup into the half and half in a small bowl before pouring it into the main pot so the temperature adjusts smoothly without curdling.
• Grate the cheddar yourself: I find that buying a block of sharp cheddar and shredding it fresh at home yields a far superior, silky-smooth melt compared to store-bought pre-shredded cheese.
• Use cold water for the cornstarch slurry: I always make sure the water is cold when mixing the cornstarch so it dissolves completely without creating gummy lumps in the soup.
• Chop broccoli into bite-sized pieces: I like to cut larger frozen broccoli florets into smaller pieces before adding them so every single spoon gets an even distribution of broccoli.

How to Serve Broccoli Cheddar Lasagna Soup Recipe?

Ladle the hot, cheesy soup into deep ceramic bowls and garnish with an extra sprinkle of freshly shredded cheddar cheese and a pinch of black pepper or red pepper flakes. Pair each bowl with a slice of warm, crusty garlic bread or a soft dinner roll for dipping directly into the velvety cheese broth. For a complete dining setup, serve it alongside a crisp green garden salad dressed with a light lemon vinaigrette to balance the rich, cheesy flavors.

Nutritional Information

Here is an estimated breakdown of key nutritional metrics per bowl serving.

• Calories: 385 kcal
• Protein: 26 g
• Carbohydrates: 24 g
• Fat: 21 g

Make Ahead and Storage

Proper storage and gentle reheating techniques keep your leftover soup tasting just as fresh and creamy as when first made.

Reheating

To reheat leftovers, warm individual portions gently in a saucepan over medium-low heat, stirring frequently until heated through. Add a splash of additional chicken broth or milk if the noodles have absorbed extra liquid and thickened the soup.

Freezing

Freezing is not recommended for this soup because dairy products like half and half and cheddar cheese tend to separate and become grainy upon thawing, and the noodles will turn mushy.

Storing and Freshness

Allow the soup to cool completely to room temperature before transferring it into airtight glass containers. Store it in the refrigerator, where it will remain delicious and fresh for up to 3 to 4 days.

Why You’ll Love This Recipe?

This Broccoli Cheddar Lasagna Soup delivers ultimate comfort food flavor with minimal effort and maximum convenience.

• Flexible Cooking Methods: You can easily choose between the rapid 15-minute Instant Pot method or the convenient slow cooker approach based on your schedule.
• Ultimate Comfort Fusion: Combining two all-time favorite comfort dishes—creamy broccoli cheddar soup and hearty lasagna—creates an unforgettable flavor experience.
• Quick Prep with Rotisserie Chicken: Utilizing pre-cooked rotisserie chicken drastically slashes your hands-on prep time while keeping the meal packed with tender protein.
• Kid-Friendly and Crowd-Pleasing: The rich, cheesy broth, tender pasta noodles, and mild veggies make it a hit with both kids and adults alike.