French Beef Au Gratin

• 1/2 cup butter or 1/2 cup margarine
• 4 cups thinly sliced vidalia onions or 4 cups any sweet onions
• 1 lb beef tenderloin (I buy the pre-cut beef stew tips) or 1 lb sirloin, cut into 1/2 " cubes (I buy the pre-cut beef stew tips)
• 3 tablespoons flour
• 1 tablespoon dark brown sugar, packed
• 1 teaspoon cumin
• 1 teaspoon salt
• 1/2 teaspoon pepper
• 1 quart beef broth
• 2 cups cooked fettuccine pasta
• 1 cup shredded mozzarella cheese
• 1/2 cup parmesan cheese, grated

1. In large, heavy bottomed pan, over medium heat, melt butter.
2. Add onions; saute, stirring often, until caramelized, but not burned, 15 to 20 minutes.
3. With slotted spoon, remove onions to medium bowl.
4. Add beef to pan; brown well on all sides.
5. Return onions and any juices to pan.
6. In small bowl, mix flour, sugar, cumin, salt and pepper and add to pan; stir 1 minute until bubbly. Gradually add broth, stirring to scrape drippings from pan; simmer 10 minutes.
7. Cook pasta according to package directions.
8. Heat broiler; place 1/2 cup fettucine in each of 4 ovenproof bowls; divide beef mixture over pasta.
9. In medium bowl, stir cheeses together; sprinkle evenly over beef.
10. Broil until cheese is melted and lightly browned, about 5 minutes. Makes 4 servings.

butter, vidalia onions, beef tenderloin, flour, brown sugar, cumin, salt, pepper, beef broth, pasta, mozzarella cheese, parmesan cheese

Taken from www.food.com/recipe/french-beef-au-gratin-115797 (may not work)