Step 1

Preheat oven to 350°F (175°C).

Step 2

In a large pot, brown the ground beef over medium-high heat. Season with Italian seasoning, salt, and pepper. Drain excess grease and set beef aside.

Step 3

In the same pot, melt 2 Tbsp butter. Add onions and cook until softened, about 5 minutes. Add garlic and cook for 1 more minute.

Step 4

Add beef broth, remaining butter, and rice. Bring to a boil, then reduce heat, cover, and simmer for 10 minutes.

Step 5

Add mushrooms on top (don't stir), cover, and cook for another 5-10 minutes until rice is tender.

Step 6

Remove from heat and let stand, covered, for 10 minutes.

Step 7

Stir in the cooked beef, cream of mushroom soup, milk, sour cream, and half the cheese.

Step 8

Transfer to a greased 9x13 casserole dish. Top with remaining cheese.

Step 9

Cover and bake for 20 minutes until cheese is melted and bubbly.

Step 10

Enjoy your homemade Beef and Rice Casserole!