ahhhh, butter and onions. Is there any better smell? In the world? I think not.
I will say that this took me quite a while to slice the onion for this. With the awkward position that my left arm/hand is in, it would cramp right up. But I persevered and got it sliced. 5 tablespoons of butter, saute the onions, take out of the pan and reserve, throw steak in, brown about 5 minutes on each side, throw 'er in the oven at 400 degrees for about 15 minutes. Take out and throw onions back in the pan. Yum!