Step 1

Heat the olive oil in a skillet over medium high heat on the stove.

Step 2

Add the ground beef and taco seasoning to the skillet, and cook until completely browned. Drain and set the meat aside to cool.

Step 3

Chop the iceberg lettuce, and place it into a large bowl.

Step 4

Add the chopped tomatoes, cooked beef, Doritos and Catalina dressing to the bowl with the lettuce, and toss well to combine.

Step 5

Serve topped with sour cream and guacamole if desired.