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The ultimate one-pot comfort dinner: ground beef browned with onions and garlic, then uncooked pasta shells and a creamy tomato sauce poured right on top. Everything simmers together until the pasta is tender and coated in velvety, cheesy sauce. Ready in 35 minutes with minimal cleanup.

Creamy One-Pot Beef and Shells

The ultimate one-pot comfort dinner: ground beef browned with onions and garlic, then uncooked pasta shells and a creamy tomato sauce poured right on top. Everything simmers together until the pasta is tender and coated in velvety, cheesy sauce. Ready in 35 minutes with minimal cleanup.

Ingredients
  

  • 1 tablespoon olive oil
  • 1 medium yellow onion finely diced
  • 2 cloves garlic minced
  • lbs ground beef 80-90% lean
  • 1 teaspoon kosher salt
  • ½ teaspoon black pepper
  • 12 oz uncooked medium pasta shells
  • 2 cups beef broth
  • cups heavy cream
  • 3 tablespoons tomato paste
  • 2 teaspoons Italian seasoning
  • cups shredded sharp cheddar cheese divided
  • ¼ teaspoon crushed red pepper flakes optional
  • 2 tablespoons grated Parmesan optional
  • 2 tablespoons chopped fresh parsley optional

Equipment

  • Large Dutch oven
  • Wooden spoon
  • Measuring cups and spoons
  • Mixing bowl & whisk
  • Cheese grater

Method
 

  1. Heat olive oil in large Dutch oven over medium heat. Add diced onion and cook 3-4 minutes, stirring occasionally, until softened and translucent. Building flavor base.
  2. Stir in minced garlic and cook 30 seconds until fragrant. Garlic burns quickly—watch carefully. Want aromatic but not browned.
  3. Add ground beef, salt, and black pepper. Break apart with wooden spoon as cooks, stirring occasionally, until completely browned with no pink, 5-7 minutes. If excessive grease (more than couple tablespoons), drain off. Little fat adds flavor but too much makes sauce greasy.
  4. Turn off heat briefly. Pour uncooked pasta shells directly over browned beef and spread into relatively even layer. Don't stir yet—just distribute evenly.
  5. In large bowl or measuring cup, whisk together beef broth, heavy cream, tomato paste, and Italian seasoning until tomato paste completely dissolved and mixture smooth with no lumps. Whisk in 1 cup shredded cheddar and crushed red pepper flakes if using. Cheese helps thicken sauce.
  6. Return Dutch oven to medium heat. Pour creamy liquid mixture evenly over pasta and beef. Use wooden spoon to gently press any exposed pasta into liquid—needs submersion to cook. Don't stir together; want layers somewhat intact for even cooking.
  7. Bring to gentle simmer, then reduce to low. Cover and cook 15-18 minutes, stirring gently once or twice, until shells tender but not mushy and sauce thickened to creamy consistency. Too much stirring breaks up beef; no stirring = pasta sticks. Find balance.
  8. Remove lid and check consistency. If too thick and pasta looks dry, add splash beef broth and stir gently. If too thin and soupy, simmer uncovered few more minutes until thickens.
  9. Turn off heat completely. Stir in remaining ½ cup cheddar until melted and incorporated, creating cheese pulls. Rest 3-5 minutes before serving—sauce thickens further and clings beautifully.
  10. Ladle into bowls from Dutch oven. Garnish with Parmesan and parsley if desired. Serve hot.

Notes

Use freshly shredded cheese—pre-shredded contains anti-caking agents preventing smooth, creamy melting.
Don't overcook pasta—keep heat low during simmering so shells cook evenly without mush.
Stir occasionally but gently—couple gentle stirs prevents sticking without breaking up beef.
Let it rest—3-5 minutes after turning off heat allows sauce to thicken and cling perfectly.
Use good beef broth—key flavor component. Use quality broth, not watery bouillon.
Don't skip tomato paste—adds concentrated flavor and helps thicken sauce.
Ground turkey or chicken: Works beautifully for lighter version.
Italian sausage: Remove from casings and brown for extra flavor.
Add vegetables: Stir in frozen peas, spinach, bell peppers, or mushrooms.
Different cheese: Mozzarella for stretchier, Colby Jack for milder, smoked cheddar for depth.
Make it lighter: Use half-and-half instead of heavy cream.
Different pasta: Rotini, elbow macaroni, or penne work well.
Make it spicy: Add extra red pepper flakes or pinch cayenne.
Add bacon: Crumble cooked bacon over top before serving.
Make ahead: Yes! Reheats beautifully, tastes even better next day as flavors meld.
No Dutch oven: Any large deep skillet with lid or large pot works fine.
Sauce too thick/thin: Thick—add splash broth and stir. Thin—simmer uncovered few minutes to reduce.
Ground turkey: Yes! Turkey or chicken work great for lighter version.
Really need heavy cream: Creates richest sauce but half-and-half works for lighter version.
Store leftovers airtight in fridge 3-4 days. Pasta absorbs more sauce—makes leftovers more flavorful.
Freeze in freezer-safe containers up to 2 months. Thaw overnight in fridge before reheating.
Reheat gently on stovetop over medium-low, stirring frequently with splash broth or milk to loosen. Or microwave portions 2-3 minutes, stirring halfway.
Serve: While hot in bowls. Rich and hearty so lighter sides balance perfectly.
Pairs with: Green salad with vinaigrette, garlic bread, dinner rolls, roasted broccoli, lemon-dressed arugula, steamed green beans.