Super Fast Spinach, Pesto and Cheese Lasagna

If you love layered, comforting pasta bakes that come together without fuss, this Super Fast Spinach, Pesto and Cheese Lasagna is going to be your new weeknight hero. It’s all about bold, familiar flavors—creamy ricotta, nutty Parmesan, vibrant pesto, tender spinach, and gooey fontina—assembled quickly and baked until bubbly. The recipe is built for simplicity: no long sauce simmering, no building from scratch, and no intimidating techniques. If you’ve followed popular food bloggers who champion smart shortcuts and big flavor, this one feels right at home on that roster.

This lasagna is perfect for a busy evening when you want something special but don’t have hours to spend in the kitchen. Using prepared pesto and bottled chunky pasta sauce speeds things up without sacrificing taste. Plus, with ricotta and egg folded into the greens, each slice holds together beautifully while staying tender and silky. The combination of Parmesan and fontina ensures a golden, slightly stretchy top that everyone will fight over.

Why this version works

• Short prep time: Pre-cooked lasagna noodles and ready-made sauces cut major prep steps.
• Balanced texture: Ricotta and egg create structure, spinach adds moisture and color, pesto brings herbal brightness, and fontina melts into irresistible strings.
• Family friendly: Mild, familiar flavors make this a crowd-pleaser for kids and adults alike.
• Make-ahead potential: Assemble ahead and refrigerate or freeze for an easy reheat later.

Ingredients

Use the exact ingredient names and quantities below when you shop and prepare. These amounts make a standard 9×13-inch lasagna.

• 3 cups ricotta cheese (skim or low fat are fine)
• 1 cup shredded Parmesan cheese
• salt and pepper, to taste
• 1 large egg
• Two 10-ounce packages frozen chopped spinach, thawed and squeezed dry
• One 7-ounce container prepared pesto
• 4 cups bottled chunky pasta sauce, divided
• 12 whole lasagna noodles (cooked)
• 2 cups grated fontina cheese

Equipment and prep notes

Gather a 9×13-inch baking dish, mixing bowls, a spatula, measuring cups, a colander for squeezing spinach, and a sharp knife for cutting slices. Preheat your oven to 375°F (190°C) before you start assembling so it’s ready when the lasagna goes in.

Flavor tips

• If your pesto is very oily, give it a stir and drain any excess oil before mixing; you still want the concentrated herb flavor without excess grease in the ricotta layer.
• Don’t over-salt the ricotta mixture. Parmesan and pesto contribute a good amount of salt, so taste the uncooked mixture and adjust sparingly.
• To get an even melt and golden top, let the lasagna rest 10–15 minutes after baking before you cut into it. This helps the layers set so each slice comes out neat.

Step-by-step instructions

Follow these clear, ordered steps to prepare the dish. The directions have been rewritten for clarity while keeping the original order and ingredient amounts intact.

1. Preheat the oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish to prevent sticking.
2. Prepare the ricotta filling: In a large bowl, combine 3 cups ricotta cheese and 1 cup shredded Parmesan cheese. Add salt and pepper to taste. Crack the large egg into the bowl and stir until the mixture is smooth and well blended.
3. Work the spinach into the ricotta mixture: Make sure the Two 10-ounce packages frozen chopped spinach have been fully thawed and squeezed dry to remove excess liquid. Add the drained chopped spinach to the ricotta mixture and fold it in evenly so the greens are distributed throughout.
4. Add pesto to the greens and cheese: Stir in One 7-ounce container prepared pesto until it’s incorporated into the ricotta-spinach mixture. This adds depth and a herby lift to the filling.
5. Place a thin base of sauce in the baking dish: Pour about 1 cup of the bottled chunky pasta sauce into the bottom of the prepared baking dish and spread it evenly to create a saucy layer that will keep the noodles from sticking.
6. Assemble the first noodle layer: Lay 4 of the cooked whole lasagna noodles in a single layer over the sauce so they cover the dish without large gaps. If needed, trim noodles to fit.
7. Spread the ricotta-spinach-pesto mixture over the noodles: Spoon about one-third of the ricotta mixture across the noodle layer and spread it with a spatula to cover evenly.
8. Top with sauce: Spoon another cup or so of the bottled chunky pasta sauce over the ricotta layer, spreading lightly but leaving some of the cheese visible for even baking.
9. Repeat layers: Add another layer of 4 cooked lasagna noodles. Spread another one-third of the ricotta-spinach-pesto mixture over these noodles, then top with about 1 cup more of the chunky pasta sauce.
10. Add the final noodle layer and remaining filling: Place the remaining 4 cooked lasagna noodles on top. Spread the final one-third of the ricotta mixture evenly over the noodles. Pour and spread the remaining bottled chunky pasta sauce across the top layer so the surface is mostly covered.
11. Top with grated fontina and a sprinkle of Parmesan: Evenly sprinkle 2 cups grated fontina cheese over the sauced top. If you like a little extra Parmesan, you can scatter any remaining portion of the 1 cup shredded Parmesan over the fontina for added flavor.
12. Bake until bubbly and golden: Place the baking dish in the preheated oven and bake for about 35–40 minutes, or until the cheese on top is melted, bubbling, and starting to turn golden brown at the edges.
13. Rest before serving: Remove the lasagna from the oven and let it rest for 10–15 minutes. This resting time lets the layers set so slices hold together when cut.
14. Slice and serve: Cut into squares and serve warm. Spoon any extra sauce from the baking dish onto plates if you like a saucier lasagna.

Serving suggestions

This lasagna is satisfying on its own, but it pairs beautifully with a few simple sides. Serve with a crisp green salad dressed with lemon and olive oil, garlic-roasted vegetables, or a light cucumber and tomato salad to balance the richness. A basket of warm crusty bread or garlic bread makes it a complete, comforting meal.

Make-ahead and storage

Assemble the lasagna up to the point of baking, then cover tightly with plastic wrap and refrigerate for up to 24 hours. When you’re ready to bake, remove the plastic wrap, let it sit at room temperature for about 20 minutes, and then bake as directed—add a few extra minutes to the baking time if it’s still cold in the center.

To freeze for longer storage, assemble the lasagna in a foil pan, cover tightly with a double layer of foil, and freeze for up to 3 months. Bake from frozen: remove any plastic wrap, keep the foil on, and bake at 375°F (190°C) for 60–75 minutes, removing the foil for the last 15 minutes to brown the top. Thawing overnight in the refrigerator will reduce baking time.

Variations and swaps

• Cheese swaps: If fontina is hard to find, young mozzarella or provolone are good alternatives for melt and stretch. Keep the fontina quantity the same to maintain the cheese ratio.
• Vegetable boost: Stir in a cup of sautéed mushrooms or diced roasted bell pepper with the spinach for extra texture and flavor.
• Spice it up: Add a pinch of red pepper flakes to the ricotta mixture or the chunky sauce for a subtle heat.

Final notes

This Super Fast Spinach, Pesto and Cheese Lasagna proves that you don’t need complicated steps to create a satisfying, memorable casserole. It’s a reliable, cozy meal that’s forgiving in the best way: simple swaps and slight timing changes still deliver big flavor. Make a double batch for potlucks, pack a pan for a neighbor in need, or enjoy the leftovers warmed up the next day—this recipe is built to fit into real life while tasting like a special occasion.

Enjoy the layers, the blend of herbs and cheese, and the way this lasagna comes together faster than you might expect. With a golden top and a tender, creamy interior, it’s comfort food done smart.