Beef Tenderloin with onion

itemscope itemtype="http://data-vocabulary.org/RecipeIngredient"> 2 teaspoons butter, divided 1 cup vertically sliced yellow onion 1 cup vertically sliced red[...]

6 tablespoons butter melted 2 each onions sliced, sauted 1 each garlic clove 1/2 pound mushrooms 1/4 pound ground beef 2 tablespoons chili sauce 4 red hot[...]

1 teaspoon vegetable oil 4 tablespoons butter or 4 tablespoons margarine , divided 2 beef tenderloin steaks (1 inch thick) or 2 beef tenderloin fillets (1[...]