This Best Creamy One-Pot Beef and Shells is a comforting, “no-strain” miracle that transforms standard pantry staples into a velvety, restaurant-style pasta dish. By simmering the uncooked medium pasta shells directly in a mixture of marinara sauce and beef broth, the pasta starch stays in the pot, naturally thickening the sauce. The addition of whole milk (or cream) and shredded mozzarella at the finish creates a “luxurious” emulsification that coats every shell, resulting in a savory, one-pot wonder that minimizes cleanup without sacrificing depth of flavor.

Best Creamy One-Pot Beef and Shells

Ingredients:

Step-by-Step Directions:

Step 1: The Savory Foundation: In a deep skillet or Dutch oven over medium-high heat, brown the ground beef with the diced onion for 5/7 minutes. Drain the excess fat. Stir in the minced garlic and cook for just 30 seconds until fragrant.

Step 2: The Pasta Submerge: Pour in the uncooked pasta shells, marinara sauce, and beef broth.

Tip: Ensure the pasta is mostly submerged in the liquid. This is a vital “mechanical” step; any shells left sitting on top of the sauce will remain crunchy and undercooked while the rest of the pot reaches perfection.

Step 3: The Gentle Simmer: Bring to a boil, then reduce heat to medium-low. Cover and simmer for 12/15 minutes, stirring occasionally.

Tip: Stirring is crucial in one-pot pasta recipes! The starches being released from the shells can cause them to stick to the bottom of the pan. If the liquid evaporates too quickly before the pasta is tender, don’t be afraid to add an extra 1/4 cup of broth.

Step 4: The Creamy Emulsion: Reduce heat to low. Pour in the milk (or cream) and stir in 1/2 cup of the mozzarella until melted and smooth. The cold dairy will interact with the hot tomato starch to create a thick, orange-tinted “pink sauce.“

Step 5: The Cheese Melt: Sprinkle the remaining 1/2 cup of cheese over the top. Cover for 1/2 minutes to let the cheese melt into a stretchy layer. Serve warm, straight from the pot.