Step 1

Heat 1 tablespoon butter and Vegetable oil in a large pan over medium-high heat. Season steak with salt and pepper and add to pan. Cook until seared on all sides. (Note: You do not need to cook the meat through. It will cook more in the oven.)

Step 2

Place sirloin in a large bowl and set aside.

Step 3

Add remaining butter to pan and cook mushrooms until browned. Add to bowl with sirloin

Step 4

Add garlic and herbs to pan and cook in whatever juices are left in the pan for 30 seconds.

Step 5

Add beef consomme, cream of mushroom soup, Worcestershire sauce, and Dijon mustard to pan and bring to a simmer.

Step 6

Add cream cheese and stir until melted. Pour mixture into bowl with steak and mushrooms.

Step 7

Add egg noodles, sour cream, and green onions and stir to combine everything.

Step 8

Season to taste with salt and pepper.

Step 9

Transfer to a greased casserole dish. Cover with aluminum foil and bake in a 350 degree oven for 25 minutes.

Step 10

Remove foil, sprinkle mozzarella cheese on top and bake uncovered for 10 to 15 minutes.