First of all, Bronco Billy's has been updated from a dark, small bar to a well-light, family (and dog) friendly bar/restaurant with shockingly good food.
Our server Allie, and she was just fantastic. There were five of us (four adults and one young child) plus my wife's service dog. Allie made sure EVERYONE was taken care of. She was friendly, treated us respectfully, got our orders right, and made sure to specify that two of us were gluten-free. She checked up on us, offered to even get a "doggie" menu for our dog, etc.
We all had burgers. They were 1/3 and cooked to perfection. The gluten-free buns came from Udi's and were tasty. I had the mushroom swiss burger - highly recommended!
I happen to hate sweet potatoes. My wife ordered a side of sweet potato fries. These came with a side of cinnamon brown sugar whipped butter. She had me try them. I thought it was delicious and munched on them.
We all ordered drinks. My wife had a brandy old fashioned sweet, one of our friends had a blackberry old fashioned, and I had a whiskey old fashioned press. These weren't watered down at all.
I felt the prices were incredible. $11.00 for a great burger with fries. $3.00 for an old fashioned. That's crazy.
We will absolutely return the next time we're in Baraboo/Lake Delton. Cheers!