1-Getting started with this recipe is as easy as turning on your oven, and the steps flow smoothly for even beginner cooks. First, preheat the oven to 375 degrees Fahrenheit and cook the 16 jumbo pasta shells to al dente according to package directions, then drain and set them aside.

2-Next, heat 1.5 tablespoons olive oil in a skillet over medium-high heat until shimmering, add 2 teaspoons fresh minced garlic, and cook until browned, about 1-2 minutes.

3-Follow that by adding 4 cups packed fresh spinach leaves (roughly chopped) and cook until wilted but still bright green, about 3-4 minutes, then remove from heat and let it cool. In a mixing bowl, combine the cooled spinach with 12 ounces skim-milk ricotta cheese, 1 cup shredded skim-milk mozzarella cheese, 0.5 cup grated Parmesan cheese, 1 large egg, 1 tablespoon fresh chopped basil, 1 teaspoon kosher salt, and 0.5 teaspoon freshly ground black pepper to create the filling.

4-Pour 0.5 cup of the 1.25 cups marinara sauce into the bottom of an 8×8-inch shallow baking dish, stuff each of the 16 cooked pasta shells generously with the mixture, and place them in the dish. Cover the shells with the remaining 0.75 cup marinara sauce, cover the dish with aluminum foil, and bake covered for 25 minutes. Remove the foil and bake uncovered for another 10-15 minutes until the top browns and the sauce bubbles, then serve warm with extra grated Parmesan cheese sprinkled on top. With a prep time of about 15 minutes and a cook time of around 35 minutes, this totals roughly 50 minutes, making it ideal for quick meals. For variations, try adaptations like using plant-based cheeses for a vegan version or gluten-free shells.