Brown ground beef and drain. Mix in taco seasoning according to package directions.
Unroll crescent rolls and place onto an ungreased 11-½ x 16-½ cookie sheet or jelly roll pan. Press dough across bottom of pan and at least ½" up the sides to form a crust. Bake in the 375° oven for 11-13 minutes or until golden.
Microwave refried beans for approximately a minute, or until just warm. Spread a thin layer over warm crust.
Sprinkle cooked ground beef mixture evenly over the beans.
Top with shredded cheese, olives, green onions, and any other optional toppings of your choice.
Return to oven for an additional 4-6 minutes, until cheese is melted.
Cut into squares and serve immediately.
Drizzle with any additional toppings, i.e. sour cream, as desired.