This 4-ingredient oven June Gloom Buster is the kind of cozy, no-fuss bake you throw together on a gray, drizzly day when you want comfort food but don’t have the energy to stand at the stove. Dry jumbo shells soak up a rich, creamy tomato sauce right in the oven, and everything turns bubbly, caramelized, and deeply savory around the edges. It’s inspired by those old Midwestern pantry casseroles our moms used to make, but pared down so you can get it in the oven in minutes and let the oven do all the work while you curl up with a book or help with homework.
Serve big spoonfuls of this casserole straight from the baking dish with a simple green salad or steamed frozen veggies on the side to add something fresh and crisp. Garlic bread or buttered toast is lovely for scooping up the saucy bits from the corners of the pan. A sprinkle of extra cheese or a few torn basil leaves on each bowl is nice if you have them, but not required. For kids, I like to serve it in smaller bowls and let them stir in a spoonful of cottage cheese or extra mozzarella to cool it down and make it extra creamy.
4-Ingredient Oven June Gloom BusterServings: 6
Ingredients
12 ounces dry jumbo pasta shells (about 30–35 shells)
24 ounces jarred marinara or tomato pasta sauce
3 cups shredded mozzarella cheese, divided
2 cups full-fat cottage cheese or ricotta cheese
Directions
Preheat your oven to 375°F (190°C). Lightly grease a 9x13-inch ceramic or glass baking dish so the pasta doesn’t stick.
In a large bowl, stir together the jarred marinara sauce and 1 cup of water until evenly combined. This extra liquid helps the dry jumbo shells cook through and turn tender in the oven.
Spread about 1 cup of the thinned sauce over the bottom of the baking dish, just enough to lightly coat the surface. This keeps the shells from sticking and helps them start softening from underneath.
In a medium bowl, mix the cottage cheese (or ricotta) with 1 1/2 cups of the shredded mozzarella cheese. Stir until you have a thick, scoopable filling. This will be your creamy, comforting center for each shell.
Working right in the baking dish to keep dishes to a minimum, stuff each dry jumbo shell with a heaping tablespoon of the cheese mixture and nestle it open-side up in a single layer in the sauced dish. It’s okay if they’re snug; they’ll expand as they bake.
Once all the shells are filled and arranged, pour the remaining marinara mixture evenly over the top, making sure to drizzle sauce into and around the shells so most of the pasta is moistened. A few tips of shells peeking out is fine and will get nicely caramelized.
Sprinkle the remaining 1 1/2 cups shredded mozzarella evenly over the top of the sauced shells. Try to cover most of the exposed pasta so it doesn’t dry out and so you get that golden, bubbly cheese crust.
Cover the baking dish tightly with foil, tenting it slightly so the cheese doesn’t stick. Place the dish on the middle rack of the preheated oven and bake, covered, for 40 minutes. This steams the shells so they soften and soak up the sauce.
After 40 minutes, carefully remove the foil (watch for hot steam). Return the dish to the oven, uncovered, and bake for another 20–25 minutes, or until the edges are deeply bubbly and caramelized, the cheese on top is golden in spots, and a fork slides easily into a shell in the center.
For extra caramelized, glistening edges, you can switch the oven to broil for 1–3 minutes at the very end, watching closely so the cheese doesn’t burn. The corners should look darkened and sticky with concentrated sauce.
Remove the casserole from the oven and let it rest for at least 10 minutes before serving. This pause lets the sauce thicken slightly and keeps the cheesy filling from spilling out too quickly when you scoop. Serve warm, straight from the baking dish, making sure everyone gets some of those umami-rich, roasted edges.
Variations & Tips
You can easily adapt this June Gloom Buster to what your family likes while still keeping it simple. For picky eaters, use a very smooth, mild marinara and a mild mozzarella so there are no “chunks” to fuss over. If your crew loves extra creaminess, stir a handful of shredded mozzarella into the sauce before pouring it over the shells. For a bit more protein, choose a high-protein cottage cheese or a marinara that already includes ground meat; just make sure any meat sauce you use is fully cooked before adding it, since the oven time here is meant to heat and cook pasta, not raw meat. If you prefer less tang, go with ricotta instead of cottage cheese, or mix half and half. To sneak in vegetables without adding more ingredients, pick a marinara that already has blended veggies. For a smaller household, assemble the full recipe in two smaller baking dishes and freeze one (tightly wrapped) before baking; you can bake it straight from frozen, covered, adding extra time until the center is hot and the shells are tender. Food safety tips: Let leftovers cool no more than 1–2 hours at room temperature before refrigerating. Store in a covered container in the fridge for up to 3–4 days and reheat until steaming hot all the way through (165°F/74°C). If reheating in the oven, cover with foil so the pasta doesn’t dry out, and add a splash of water or extra sauce if it looks tight. Always discard any casserole that has sat out at room temperature for more than 2 hours to avoid foodborne illness.
