Zucchini Lasagna Rolls Baked in a Skillet with Ricotta and Mozzarella Step-by-step instructions

Before you start

Set the oven rack to the middle position and heat the oven to 375°F (190°C). Wash and dry the zucchini, trim the ends, and set out a cutting board, a chef's knife and a box grater. Grate the mozzarella and keep about one third of it aside for the top of the rolls.

Finely grate the hard cheese, slice the garlic and pick the basil leaves from their stems. Pat the zucchini ribbons dry before filling them so that the filling sticks and the rolls do not release water in the skillet. Having every component measured and within reach makes rolling quick and keeps the zucchini from sitting out too long.

Instructions

Slice, grate and mix the filling

1. 1Slice the zucchini into ribbons
   Trim the ends of the zucchini. Using a chef's knife, slice each zucchini lengthwise into long, thin green ribbons about 1/8 inch thick. Discard the thinnest outer slices if they are mostly skin, and pat the ribbons dry with paper towels.
   Look for Long, flexible, even green ribbons that bend without breaking.
   Tip A mandoline or a sharp peeler gives even ribbons; keep the thickness consistent so the rolls cook evenly.
2. 2Grate the mozzarella
   Cut the block of mozzarella into pieces that fit your box grater. Grate it over the cutting board on the large holes until you have a fine pile of shredded cheese. Set aside about one third for topping the rolls.
   Look for A fluffy pile of fine white shreds, not clumps.
   Tip Chill the mozzarella for 10 minutes before grating so it shreds more easily.
3. 3Make the ricotta filling
   In a mixing bowl, combine the ricotta, the grated hard cheese, the sliced garlic, half of the chopped basil, a pinch of salt and black pepper. Stir until smooth and spreadable, and reserve the mixture for the rolls.
   Look for A smooth, spreadable filling that holds its shape on a spoon.
   Tip Whisk the ricotta first for a silkier texture that spreads easily over the zucchini.

At the end of this phase you should have a pile of long, thin zucchini ribbons, a fine pile of shredded mozzarella and a smooth, spreadable ricotta filling flecked with garlic, basil and grated hard cheese. The ribbons should bend without tearing and the filling should hold its shape when lifted with a spoon.

Taste the filling and adjust the salt and pepper before you start rolling, because the rolls are baked in sauce and the seasoning needs to be right from the start. If the ribbons are thick or uneven, slice a few more thinner ones so each roll cooks at the same rate.

Spread the sauce and roll the zucchini

4. 4Spread the marinara in the skillet
   Heat the oven to 375°F (190°C). Warm the olive oil in a cast-iron skillet over medium heat, then spread the marinara sauce in an even layer across the bottom of the pan.
   Look for Sauce spread edge to edge, just starting to simmer at the edges.
   Tip Use a spoon to push the sauce into the corners so the rolls sit in it.
5. 5Fill and roll the zucchini
   Lay the zucchini ribbons flat on the board. Spread a thin layer of the ricotta mixture over each ribbon, sprinkle with shredded mozzarella, then roll each ribbon up tightly from one short end.
   Look for Tight, neat rolls with the filling held inside.
   Tip Leave a small border at one end of each ribbon so the filling does not squeeze out when rolling.
6. 6Arrange the rolls in the sauce
   Place the rolls seam side down in the sauce in neat rows, filling the skillet. Scatter the remaining shredded mozzarella over the top, then sprinkle with a little more grated hard cheese.
   Look for Rolls snug together in rows, with cheese covering the tops.
   Tip Fit the rolls close together so they hold their shape while baking.

At the end of this phase the marinara should cover the bottom of the skillet in an even layer, with the edges just starting to simmer. Each zucchini ribbon should be spread with a thin coat of filling, dusted with shredded mozzarella and rolled up tightly into a neat cylinder. The rolls should look compact and hold their shape without splitting. Check that the seam side of each roll is facing down, so it stays closed in the oven, and that there is enough sauce to surround the base of every roll before baking.

Bake, rest and finish the rolls

7. 7Bake until the cheese melts
   Bake the skillet on the middle rack for 20 to 25 minutes, until the cheese is fully melted, golden in spots, and the rolls are hot throughout. Let the skillet rest for 5 minutes before serving.
   Look for Golden, bubbling cheese and sauce gently simmering at the edges.
   Tip Bake on the middle rack so the cheese browns evenly without the sauce scorching.
8. 8Garnish and serve
   Scatter the remaining fresh basil leaves over the rolls and finish with a little more grated hard cheese. Lift the rolls out with tongs and serve hot, straight from the skillet.
   Look for Stretchy melted cheese pulls away from each roll.
   Tip Tear the basil by hand just before serving so it stays bright green.

At the end of this phase the rolls should be golden in spots, with melted, bubbling mozzarella and sauce simmering around the edges of the skillet. The filling should feel hot and creamy when you press a roll gently with the back of a spoon. Let the skillet rest for 5 minutes so the sauce thickens slightly and the rolls firm up enough to lift cleanly. Before serving, scatter the remaining basil and a little hard cheese over the top and check that the rolls are hot in the centre, not just at the edges.

Common mistakes

The most common problem is a watery dish. Zucchini releases liquid as it sits, so cut and roll it shortly before baking, and blot the ribbons dry before you spread the filling. Overfilling the rolls is the second issue: too much ricotta pushes out the sides and makes them hard to roll.

Use a thin, even layer and leave a small border at one end. Finally, avoid crowding the skillet with a loose layout. Rolls packed tightly in neat rows bake more evenly, while scattered rolls can dry out at the edges and leave the centre cool. Keep the sauce layer even so every roll sits in it.

How to tell it’s done

The rolls are done when the mozzarella on top has melted completely, turned golden in spots and bubbles around the edges, and the marinara simmers gently at the sides of the skillet. Press the centre of a roll with a spoon: the filling should feel hot and creamy all the way through.

Because this dish has no meat or eggs, there is no protein temperature to reach, but the filling should be steaming hot in the centre before you serve. If the cheese is pale or the centre feels cool, return the skillet to the oven for a few more minutes and check again.