Pesto in Lasagna – Layering Tips

In this post, we’ll guide you through how to layer pesto into lasagna without overpowering or breaking your bake. You’ll learn what pestos work best, how to avoid oil separation, and how to pair it with the right cheeses and fillings for a lasagna that’s as comforting as it is creative.

Why Use Pesto in Lasagna?

Best Types of Pesto for Lasagna

Not all pesto works the same when baked. You need one that holds its structure but melts gently into the layers.

Best Options:

• Pesto alla Genovese – classic basil for the traditionalist
• Kale & Walnut Pesto – holds up well to baking
• Spinach & Ricotta Pesto – ideal for white lasagna layers
• Butternut Squash & Sage Pesto – cozy and autumnal
• Broccoli & Almond Pesto – rich and hearty

Avoid:
• Very thin pestos (like fava bean mint) unless thickened
• Super oily pestos that may separate when baked

How to Incorporate Pesto Into Lasagna Layers

1. Mix Pesto with Ricotta or Bechamel

• Prevents pesto from separating in the oven
• Creates a creamy, spreadable consistency
• Use a ratio of 2 parts ricotta to 1 part pesto, or mix with white sauce

2. Spread Thin, Even Layers

• A thin layer of pesto between noodles ensures flavor without greasiness
• Overloading will lead to pools of oil and soggy texture

3. Alternate with Cheese or Vegetable Layers

• Don’t stack pesto layers back to back—separate with cheese or roasted vegetables

4. Drizzle on Top for Garnish

• After baking, finish with a swirl of fresh pesto for color and flavor burst

Suggested Pesto Lasagna Combos

1. Green Lasagna (Primavera Style)

• Pesto alla Genovese + ricotta mixture
• Roasted zucchini, asparagus, and artichoke hearts
• Mozzarella and Parmesan
• No tomato sauce needed—white and green layers only

2. Mushroom & Kale Pesto Lasagna

• Sautéed mushrooms and garlic
• Kale and walnut pesto blended with béchamel
• Layers of fontina or smoked provolone

3. Butternut & Sage Pesto Lasagna

• Roasted butternut squash cubes
• Pesto blended with ricotta
• Gruyère and pecorino for cheese layers

4. Red Pepper Pesto & Chicken Lasagna

• Roasted red pepper pesto
• Shredded chicken breast
• Ricotta and mozzarella
• Works well with no-boil noodles

Tips to Prevent Pesto from Separating or Becoming Oily

• Use room temperature pesto for blending into ricotta—cold pesto will clump
• Avoid adding too much oil to your pesto if prepping fresh
• Bake covered with foil for most of the time, then uncover to brown
• Let lasagna rest for 10–15 minutes before slicing to allow the layers to set

Cheese Pairings for Pesto Lasagna

Serving Suggestions and Leftover Ideas

• Serve with: crisp arugula salad, roasted tomatoes, or grilled bread
• Leftovers: pesto lasagna actually gets better overnight
• Reheat gently in oven or covered pan with a splash of water

Lasagna Like You’ve Never Had It

Pesto in lasagna might sound unorthodox at first, but it’s a match made in herbaceous heaven. It brings lightness, brightness, and unexpected flavor to a dish that’s often thought of as heavy and indulgent.

Whether you go for a traditional Genovese blend or a bold seasonal variant, layering pesto into lasagna is a fresh, exciting take on a beloved classic—and it just might become your new favorite way to make it.