Mushroom Rice Casserole

My cousin Tara used to make this when I was growing up and it was definitely one of my all time favorite dishes. I call it mushroom rice casserole because, well, I don't know it's proper name. And it combines two of my favorite foods..mushrooms. and. rice. Sooooo this is mushroom rice casserole. It is so yummo, I could eat the entire dish.

1 cup long grain rice (I am a slacker and I use two bags of boil in the bag rice)
1 can french onion soup
1 can beef broth
1 can sliced mushrooms (I am not a slacker and I like to sauté 1 package of fresh mushrooms in butter)
1/4 cup butter (if I sauté the mushrooms, I omit this)

Preheat oven to 350.
Combine all ingredients in and 8 X 8 casserole dish, cover and bake 45-60 minutes.

This is delicious!