1 (28-ounce) can diced tomatoesPour tomatoes with their juices into 1-quart liquid measuring cup. Add water until mixture measures 1 quart.
1 tablespoon olive oil
1 medium onion, minced
2 C chopped spinach
3 medium cloves garlic, minced
1/8 teaspoon red pepper flakes
12 oz Italian sausage, casing removed (can also buy sausage not in casings)
10 curly-edged lasagna noodles, broken into 2-inch lengths
1 can (8 ounces) tomato sauce
1 C mozarella
Grated Parmesan to taste (optional)
Ground black pepper
1 cup ricotta cheese
3 tablespoons chopped fresh basil
Heat oil in large nonstick skillet over medium heat until shimmering. Add onion and 1/2 teaspoon salt and cook until onion begins to brown, about 5 minutes. Add the spinach.
Stir in garlic and pepper flakes and cook until fragrant, about 30 seconds. Add sausage and cook, breaking up the meat into small pieces with a wooden spoon, until no longer pink, about 5 minutes.
Scatter pasta evenly over meat but do not stir. Pour diced tomatoes with juices and tomato sauce over pasta. Cover and bring to simmer. Reduce heat to medium-low and simmer, stirring occasionally (which really means pressing the pasta back into the sauce and kind of poking around), until pasta is tender, about 20 minutes. (The sauce should look watery after 15 minutes of cooking.)
Remove skillet from heat and stir in the mozarella. Season with salt and pepper. Dot with heaping tablespoons ricotta, cover, and let stand off heat for 5 minutes. Sprinkle with basil and remaining 2 tablespoons Parmesan. Serve.
Serves 4 to 6, from America's Test Kitchen Family Cookbook