Becky and Amber's Bull Run Nachos

1 lb. lean ground beef
1 cup chopped onion
1 pkg. taco seasoning
1 9-10 oz. bag tortilla chips
1 lb. sharp Cheddar Cheese, shredded
1 lb. Monterey Jack Cheese, shredded
1 cup chopped tomatoes
1 cup chopped lettuce
2 TBSP garlic powder
Jalapeno peppers (optional)
Sour Cream (optional)

In a large non-stick skillet, brown ground beef, 1/2 cup onion and taco seasoning over medium heat for about 10 to 12 minutes or until meat is no longer pink. Drain off excess fat. Set aside. Arrange tortilla chips on large serving platter, side-to-side. Top tortilla chips with hot beef mixture, making certain that each chip is covered. Sprinkle Cheese over beef mixture following with garlic powder and then the lettuce, tomatoes and remaining 1/2 cup onion. Top with jalapeno peppers and a generous amount of Sour Cream. Enjoy!