Baked Zucchini Lasagna Rolls in One Skillet Step-by-step instructions

Before you start

Gather everything before you turn on the oven, because the rolling goes quickly once you start. Preheat the oven to 375°F (190°C) and set a rack in the center position. Wash and dry the zucchini, trim the ends, and set a cutting board, chef's knife and box grater within easy reach. Mince the garlic, grate the cheese, and pick the basil leaves so they are ready to use. Stir the ricotta filling together in advance so you can focus on rolling. Having a clean, dry work surface and a spatula nearby will make the process smooth and keep the ribbons from tearing or sticking to the board.

Instructions

Slice, grate and season

1. 1Prepare the zucchini ribbons
   Trim the ends of the zucchini. Using a chef's knife or a mandoline, slice each zucchini lengthwise into long, thin ribbons about 1/8 inch thick. Discard the first and last slices, and pat the ribbons dry with a towel so they roll without tearing.
   Look for Ribbons are flexible, pale green, and thin enough to bend without snapping.
   Tip Slice a little thicker than you think if the ribbons keep tearing when you roll them.
2. 2Mince the garlic and basil
   Peel and mince the garlic cloves. Stack the basil leaves, roll them tightly, and slice them into thin ribbons, keeping a few whole leaves aside for serving.
   Look for Garlic is finely minced and the basil ribbons smell sweet and fragrant.
   Tip Chiffonade the basil just before using it so it stays bright green.
3. 3Grate the cheese
   Grate the white cheese on the large holes of a box grater until you have a fine pile. Set aside one cup for the filling and half a cup for the topping.
   Look for The cheese forms a loose, fluffy pile with no large chunks.
   Tip Grate the cheese from a block rather than buying pre-shredded cheese for better melting.

The zucchini is sliced into long, pale green ribbons about an eighth of an inch thick, and the garlic is finely minced. The white cheese is grated into a light, fluffy pile, and the basil is cut into thin ribbons. Before going on, check that the ribbons are patted dry and that you have trimmed the ends so each one rolls easily.

The ricotta filling should look smooth, creamy and evenly flecked with garlic and cheese, with no lumps of ricotta left. If the ribbons still feel wet, blot them again so the rolls seal well and the sauce stays thick around them. Setting these pieces out in order keeps the assembly calm and prevents the zucchini from drying on the board while you work.

Roll the filled zucchini

4. 4Make the ricotta filling
   In a mixing bowl, combine the ricotta, one cup of grated cheese, the beaten egg, the minced garlic, kosher salt and black pepper. Stir until the mixture is smooth, creamy and evenly seasoned.
   Look for The filling is thick, smooth and spreads easily with a spoon.
   Tip Stir in the garlic well so each roll has an even flavor.
5. 5Fill and roll the zucchini
   Lay a zucchini ribbon flat on the board. Spread about one tablespoon of the ricotta filling across the wide end, then roll it up gently. Repeat with the remaining ribbons, placing a basil ribbon inside a few of them.
   Look for Each roll holds its shape with the filling sealed inside.
   Tip Spread the filling thinly so the rolls do not split while baking.
6. 6Sauce the skillet
   Heat the olive oil in the cast iron skillet over medium heat. Pour in the tomato sauce and spread it into an even layer, letting it warm for about two minutes.
   Look for The sauce is warm and loose across the bottom of the pan.
   Tip Spread the sauce to the edges so the rolls do not stick to the iron.

Each zucchini ribbon holds a neat, even roll with the filling sealed inside and no ends splitting open. Before moving on, check that every roll is tight enough to keep its shape when you lift it. Spreading the filling in a thin, even layer is the key, because too much filling pushes the seams apart in the oven.

The rolls should feel firm, springy and easy to handle, without any tears along the outer ribbon. If one breaks, simply patch it with a little extra filling and roll it again. Keep the finished rolls covered and cool until you are ready to arrange them, so they hold their shape and the filling stays creamy and set.

Sauce, arrange and bake

7. 7Arrange the rolls in the skillet
   Set the rolls seam-side down in the tomato sauce in a single row or circle. Top each roll with a little of the remaining mozzarella and a small dollop of the leftover ricotta mixture.
   Look for The rolls sit snugly with their seams tucked under the sauce.
   Tip Leave a little space between rolls so the cheese melts evenly.
8. 8Bake until bubbling
   Sprinkle the Parmesan over the rolls. Bake in the oven at 375°F (190°C) for about 25 to 30 minutes, until the cheese is bubbling and golden brown at the edges and the sauce is hot.
   Look for Cheese bubbles across the top and browns at the edges of the skillet.
   Tip Rotate the skillet halfway through baking for even browning.
9. 9Rest and serve
   Let the skillet rest for five minutes so the sauce settles. Scatter the reserved basil leaves over the rolls, then serve them warm, straight from the skillet.
   Look for The cheese is set and the rolls lift cleanly from the sauce.
   Tip Serve with a spatula so the rolls keep their shape.

The tomato sauce is warm and spread across the bottom of the skillet, the rolls are arranged seam-side down with a little space between them, and the mozzarella and ricotta dollops sit on top. When baked, the cheese should be bubbling vigorously and turning golden brown at the edges, while the sauce looks hot and slightly thickened around the rolls.

Check that the rolls are set and lift cleanly from the sauce without falling apart. If the top is still pale and the sauce looks thin, bake for a few more minutes and check again. Let the skillet rest briefly before serving so the sauce settles and the cheese firms enough to slice and lift easily.

Common mistakes

The most common mistake is slicing the zucchini too thickly, which makes the ribbons stiff and prevents them from rolling without cracking. Another frequent problem is overfilling. A heaping spoonful of ricotta pushes out of the seams and burns in the sauce, so keep the amount modest.

Skipping the drying step also causes trouble, because wet ribbons release water into the sauce and make the rolls slide around. Finally, do not crowd the skillet. Rolls packed too tightly steam instead of browning, and the top cheese will not turn golden. Leave a little room between each roll so the heat reaches the cheese and the edges can crisp.

How to tell it’s done

The dish is ready when the cheese across the top is fully melted, bubbling steadily and golden brown at the edges of the skillet. The rolls should feel tender when pierced with a knife tip, with the zucchini soft but still holding its shape, and the filling should look creamy and set rather than loose. The tomato sauce should be hot all the way to the edges of the pan. Because this recipe contains eggs in the ricotta filling, bake until the center of the filling reaches 160°F (71°C) to ensure the egg is fully cooked. Use an instant-read thermometer inserted gently into the center of a roll.