Start by dicing your onion and mincing the garlic cloves. Cut your beef into 1-inch cubes, ensuring they are of even size for consistent cooking. Measure out the beef broth, heavy cream, and pasta to have everything ready to go.
In a large skillet over medium-high heat, sear the beef cubes until browned on all sides. This step adds depth and a rich flavor to your pasta dish, as searing locks in the juices of each beef cube, making every bite flavorful and tender.
Transfer the seared beef, diced onions, minced garlic, beef broth, and Italian seasoning to the slow cooker. Stir to ensure the spices and ingredients are well mixed. Cover and allow the slow cooker to do its magic on low for 6–8 hours or on high for 3–4 hours.
About 30 minutes before the cooking time ends, bring a large pot of salted water to a boil. Add the pasta and cook it al dente according to the package instructions. Drain well and prepare it for the next delicious step.
Once the beef is adequately tender, pour in the heavy cream and add the cooked pasta to the slow cooker. Stir gently to ensure that the pasta is coated with the creamy sauce, taking care not to break the tender beef pieces. Allow it to cook for an additional 10-15 minutes to meld the flavors.
Notes
Store any leftovers in an airtight container in the fridge for up to 3 days. Reheat gently to maintain texture.