Outback Steakhouse offers a Mini OREO Milkshake for free with any purchase via this printable coupon. (Fill out the short form; the coupon will be emailed to you.) That's the first freebie milkshake offer we've seen from Outback Steakhouse. (For further comparison, we saw a free Blooming Onion three weeks ago.) Limit one per table. Click here to find a location near you. Coupon ends August 7.