Unfortunately they have no nutritional info posted. I sent them an email a few weeks ago for the same reason and was informed that they have not done a nutritional analysis of any of their foods and were unable to give me carb counts, ingredients or calories for any of their menu items.

Their response was as follows:

"Thank you for your interest in the nutritional value of
Outback Steakhouse entrees. Outback Steakhouse does not
make nutritional claims about our menu items. Accordingly,
we have not conducted a detailed nutritional analysis of
our menu items, except for our Tangy Tomato no-oil salad
dressing due to the "fat free" claim. However, all of our
food is prepared fresh daily, so when possible, we will try
and accommodate your dietary needs. "

Sorry - wish I had better news for you (and me...)!