Baked Zucchini Lasagna Rolls with Ricotta and Marinara Step-by-step instructions

Before you start

Preheat the oven to 375°F (190°C) and place a rack in the center. Set out the zucchini, a box grater, a chef's knife, a wooden cutting board, a mixing bowl and the cast iron skillet. Measure the marinara, mozzarella and parmesan so they are ready when you need them.

Mince the garlic, chop the basil and keep a few whole leaves for garnish. Keep the ricotta chilled until you grate it, since cold cheese grates into fine, fluffy curds. Working with clean, dry hands and a clean board keeps the ribbons easy to handle and the filling fresh.

Instructions

Ribbons and filling ready

1. 1Slice the zucchini into ribbons
   Trim the ends of the zucchini. Using a chef's knife on a wooden cutting board, slice each zucchini lengthwise into thin ribbons, about 1/8 inch thick. Set the ribbons aside and keep the garlic and basil within reach.
   Look for Ribbons are thin and flexible enough to bend without snapping.
   Tip Thin, even ribbons roll tightly and bake evenly. Discard the thinnest outer slices if they tear.
2. 2Grate the ricotta
   Grate the ricotta over a box grater so fine, fluffy curds fall onto the board. Transfer them to a mixing bowl. Add the parmesan, chopped basil, minced garlic, kosher salt and black pepper, then stir until evenly combined.
   Look for The filling is fluffy, speckled with green basil and pale parmesan, and holds its shape on a spoon.
   Tip Grating the ricotta keeps the filling light. Taste the mixture and adjust the seasoning before rolling.

The zucchini is sliced into thin, flexible ribbons that bend without snapping. The grated ricotta is fluffy and light, mixed with parmesan, chopped basil, garlic, salt and pepper into a spreadable filling that holds its shape on a spoon.

Check the seasoning by tasting a small spoonful of the filling, and add a pinch more salt or pepper if it tastes flat. Discard any ribbons that tear, since sturdy ribbons make tighter, neater rolls and keep the filling from leaking out during baking.

Rolls filled and packed

3. 3Spread the sauce and fill the ribbons
   Spread a layer of marinara across the bottom of a 12-inch cast iron skillet. Lay out the zucchini ribbons and spoon a portion of the seasoned ricotta filling along one end of each ribbon. Roll each ribbon tightly into a spiral.
   Look for Each roll is tight and holds its filling without leaking.
   Tip Spoon the filling just along one end so the roll stays neat and the filling does not spill out.
4. 4Pack the rolls in sauce
   Stand the rolls upright and pack them snugly in the sauce-covered skillet. Fill the gaps with more marinara, then scatter the shredded mozzarella generously over the top along with extra parmesan.
   Look for Rolls are snug and upright, with sauce visible in every gap.
   Tip Snug packing keeps the rolls from loosening as they bake.

Each zucchini ribbon has a line of filling along one end and rolls into a tight spiral that holds its shape. The skillet has a layer of marinara across the bottom, and the rolls stand upright, packed snugly with sauce in every gap. Before baking, check that no roll has unrolled or leaked filling onto the board, and that the mozzarella and extra parmesan cover the top evenly. Tight, upright rolls keep their shape in the oven and give the finished dish clean slices.

Bubbling and golden on top

5. 5Bake until bubbling and golden
   Bake the skillet until the zucchini is tender, the sauce bubbles around the edges and the mozzarella is melted and golden brown on top. Let the skillet rest for 5 minutes before serving.
   Look for Sauce bubbles at the edges and the mozzarella is golden brown and melted.
   Tip A short rest lets the sauce settle so the rolls hold together when served.
6. 6Garnish and serve hot
   Scatter the whole basil leaves over the rolls, add a sprinkle of black pepper and extra parmesan, then serve hot. Pull the rolls apart so the cheese stretches in long strands.
   Look for Cheese stretches in long strands when a roll is pulled apart.
   Tip Serve straight from the skillet to keep the cheese soft and stretchy.

After baking, the zucchini feels tender when pierced with a knife, the sauce bubbles around the edges of the skillet, and the mozzarella is melted and golden brown across the top. Look for a light, even browning rather than dark patches. Let the skillet rest for 5 minutes before serving so the sauce settles and the rolls hold together. The skillet should smell of warm tomato, basil and toasted cheese, and the rolls should look glossy and moist.

Common mistakes

The most common mistake is slicing the zucchini too thick. Thick slices stay firm, crack when rolled and do not soften evenly, so the rolls look uneven and the centers stay underdone. Aim for ribbons about 1/8 inch thick and discard any that tear. Another frequent error is overfilling the ribbons. Too much ricotta pushes out the ends, and the filling spills into the sauce.

Spoon the filling along one end only and roll gently. Packing the rolls loosely also causes trouble, because they lean and unroll in the oven. Pack them snugly and fill the gaps with sauce. Finally, do not skip the rest. Serving straight from the oven makes the sauce run and the rolls slump, so wait 5 minutes for a neater result.

How to tell it’s done

The rolls are done when the zucchini is tender enough that a paring knife slides through a ribbon without resistance, the marinara bubbles visibly around the edges of the skillet and the mozzarella is melted and golden brown on top. The filling should look hot and creamy at the center of the roll.

Because this dish has no meat, poultry or eggs, there is no safe internal temperature to reach, but the sauce should be steaming hot throughout. If the cheese is pale or the zucchini still feels firm, return the skillet to the oven for 3 to 5 minutes and check again.