Instructions:
Begin by browning the ground beef with the chopped onion and minced garlic in a skillet over medium heat. This is where the magic starts, as the meat sizzles and the onions become translucent, releasing their sweet aroma.
While the meat is cooking, bring a pot of water to a boil and cook your macaroni according to the package directions. Once al dente, drain and set aside, ready to join the casserole party.
Once your meat is nicely browned and the onions are tender, drain any excess fat. This is crucial for a non-greasy finish. Stir in the creamy mushroom soup, milk, and all the seasonings, along with the canned mushrooms. This mixture will envelop your ingredients in a rich, savory sauce.
Now, let’s layer up! In a 2-quart casserole dish, start with a layer of half the meat mixture, then a layer of macaroni, and finally, a generous sprinkle of that sharp cheddar cheese. Repeat the layers, but hold back the last bit of cheese for a cheesy finale.
Bake your casserole creation in a preheated 350°F oven, uncovered, for 20 minutes. This is when everything melds together, the flavors mingle, and the cheese starts to bubble.
After 20 minutes, pull out the casserole and sprinkle the remaining cheese over the top. Return it to the oven for a few more minutes until the cheese is perfectly melted and slightly golden.