Serves 4

Cooking the pasta right in the pasta sauce infuses it with flavor and streamlines cleanup.

WHY THIS RECIPE WORKS:
To prepare our spaghetti with shrimp, we seared the shrimp over high heat until just barely cooked through, then set them aside while we prepared the sauce and pasta. We used just one pan for cooking both the shrimp and the pasta so the finished dish picked up the flavors left behind by the shrimp. Cooking the pasta in the pasta sauce infuses flavor and streamlines the preparation.

Serves 6 to 8

Why this recipe works:
Following the success of our Spinach and Mushroom Lasagna, we decided to create a hearty sausage version. Boosting the flavors of the ricotta filling with a hefty amount of Parmesan and some fragrant basil certainly helped our cause, as did boldly flavored Italian sausage. To keep things simple, we found spooning dollops of ricotta over the noodles—instead of spreading it—and pinching off pieces of raw sausage helped to streamline assembly. As for the sauce, the test kitchen’s favorite jarred sauce (Bertolli Tomato and Basil Sauce) worked perfectly.

Serves 8 to 10

Our favorite lasagna noodles are Barilla No Boil. You can thaw the spinach overnight in the refrigerator instead of microwaving it. But do warm the spinach liquid to help smooth the ricotta.

WHY THIS RECIPE WORKS:
To make a spinach lasagna worthy of its name, the first step was simple: increase the spinach. Frozen spinach tastes just as good as fresh and cuts down on kitchen time as well. For the finest, most even texture, we use the food processor to chop the spinach and to smooth out the ricotta cheese. The final secret for extra spinach flavor is using some of the spinach liquid but not enough to make the lasagna watery. We nixed the traditional creamy béchamel in favor of a fresh, herb-flecked tomato sauce but still layered in plenty of mozzarella and Parmesan for added richness.

Serves 6 to 8, or 10 to 12 as a side

It’s crucial to cook the pasta until tender—just past the “al dente” stage. In fact, overcooking is better than undercooking the pasta. Whole, low-fat, and skim milk all work well in this recipe. The recipe can be halved and baked in an 8-inch-square, broilersafe baking dish. If desired, offer celery salt or hot sauce (such as Tabasco) for sprinkling at the table.

Serves 4 as a main course or 6 to 8 as a side dish

If you’re in a hurry or prefer to sprinkle the dish with crumbled common crackers (saltines aren’t bad either), you can skip the bread crumb step.

Serves 4

The pasta and sauce cook in just about the same amount of time. If you like the fruitiness of extra-virgin olive oil, toss 1 tablespoon into the sauced pasta before serving.

Serves 4 to 6

We prefer the flavor and texture of chunky peanut butter in the sauce; in particular, we like conventional chunky peanut butter because it tends to be sweeter than natural or old-fashioned versions.

Serves 8 to 10 as a side dish

This salad is best served the day it is made; if it’s been refrigerated, bring it to room temperature before serving. The pesto can be made a day ahead—just cook the garlic cloves in a small saucepan of boiling water for 1 minute. Garnish with additional shaved or grated Parmesan.

Serves 4

Do not substitute no-boil lasagna noodles for the traditional, curly-edged lasagna noodles here. Meatloaf mix is a combination of ground beef, pork, and veal, sold pre-packaged in many supermarkets. If it’s unavailable, use 1/2 pound each ground pork and 85 percent ground beef. We recommend using either whole milk or part-skim ricotta here, but do not use fat-free ricotta, which has a very dry texture and bland flavor.

Serves 4 to 6 as a first course

Fresh pasta is the best choice for this dish; supermarkets sell 9-ounce containers of fresh pasta in the refrigerator section (see related article for tasting results). When boiling the pasta, undercook it slightly (even shy of al dente) because the pasta cooks an additional minute or two in the sauce. Note that Fettuccine Alfredo must be served immediately; it does not hold or reheat well.