- Click here and sign into your account or Join for Free https://www.bk.com/rewards/offers
- Click here for Offer Section
- Scroll down under Offers and look for Offer titled 'Free Brownie Batter Shake with any Purchase. Free Brownie Batter Shake w/ $1 Purchase.'
- Click 'Add to Mobile Order'
- Click 'Add $0.00'
- Proceed to add any item(s) $1+ to your order
- Click Checkout
- Confirm restaurant details is correct as that will be where you pick up your food
- Select Drive Thru, Pickup or Dine In
- Click 'Continue', confirm payment details then click 'Continue' again
- Your order should be submitted
Offer valid through October 24, 2021 or while promotion lasts.