This 4-ingredient oven penne is the kind of no-fuss, rib-sticking supper that has quietly fed farm families for generations. Instead of boiling a pot of water and dirtying extra dishes, you just dump the dry penne straight into a glass baking dish, pour over a few pantry staples, and let the oven do the work. It reminds me of the busy planting seasons when we needed something hearty and hands-off that could bake away while chores were getting finished. The noodles soak up the sauce right in the pan, making a cozy, casserole-style pasta that feels like a hug at the end of a long day.
Serve this oven penne hot from the glass dish with a simple green salad or some steamed vegetables to balance the richness. Warm garlic bread or buttered toast soldiers are wonderful for scooping up the saucy corners. A light fruit salad or sliced apples on the side keeps it feeling homey and not too heavy. If you enjoy a little extra comfort, finish each plate with an extra sprinkle of cheese or a spoonful of cottage cheese, the way many Midwestern tables have done for years.
4-Ingredient Oven PenneServings: 6
Ingredients
12 ounces dry penne pasta
3 cups jarred pasta sauce (marinara or your favorite red sauce)
3 cups water
2 cups shredded mozzarella cheese
Directions
Preheat your oven to 400°F (200°C). Place a 9x13-inch clear glass baking dish on the counter so it’s ready to fill.
Pour the dry penne pasta evenly into the bottom of the glass baking dish. Shake the dish gently so the noodles lie in a fairly even layer; this helps them cook more uniformly.
In a large measuring cup or bowl, stir together the jarred pasta sauce and the water until well combined. It will look a bit thin, but the pasta will drink up that liquid as it bakes.
Pour the sauce-and-water mixture evenly over the dry penne in the glass dish, making sure all the pasta is moistened. Use the back of a spoon to press any exposed noodles down under the liquid as much as possible.
Cover the glass baking dish tightly with aluminum foil, crimping the edges well so steam is trapped inside. This is what helps the dry pasta cook through without boiling it first.
Place the covered dish on the center rack of the preheated oven and bake for 35 minutes, until the pasta is mostly tender and the liquid is bubbling around the edges.
Carefully remove the dish from the oven and peel back the foil away from you to avoid a burst of hot steam. Check a piece of pasta; it should be just shy of fully tender at this point.
Sprinkle the shredded mozzarella cheese evenly over the top of the hot pasta. Return the uncovered dish to the oven and bake for another 10–15 minutes, or until the cheese is melted, bubbly, and lightly golden in spots and the pasta is fully tender.
Let the baked penne rest on the counter for 5–10 minutes before serving. This short rest helps the sauce thicken and makes it easier to scoop neat portions right from the glass dish.
Variations & Tips
For a meatier version, you can replace 1 cup of the water with 1 cup of beef or chicken broth and stir in 1–2 cups of cooked, crumbled ground beef or sausage before baking, keeping the total number of main ingredients to four by using a meat sauce instead of plain marinara. If your family likes a little zip, add crushed red pepper flakes or a spoonful of prepared pesto to the sauce-and-water mixture before pouring it over the pasta. Different cheeses, such as shredded cheddar, Italian blend, or provolone, will each give their own personality to the dish while keeping the method the same. To stretch the meal, you can tuck a few handfuls of frozen peas or corn under the cheese layer; just know that adding extra ingredients may lengthen the baking time slightly. For food safety, always make sure the casserole is heated through and bubbling in the center before serving; the pasta should be steaming hot. Use an oven-safe glass dish rated for high temperatures, and avoid placing a cold glass dish directly from the refrigerator into a hot oven to prevent cracking—let it come closer to room temperature first. Leftovers should be cooled within 2 hours, stored in a covered container in the refrigerator, and eaten within 3–4 days, reheating until steaming hot all the way through.
