A baker needs to use a total of 5 and one-fourth (5 1/4) cups of chocolate chips for a recipe. If she has already used two and three-fourths (2 and three-fourths) cups, how much more chocolate chips does she need for the recipe?

The baker needs a total of 5 1/4 cups of chocolate chips.

She has already used 2 3/4 cups.
To find out how much more she needs, subtract the amount used from the total amount needed: 5 1/4 - 2 3/4 = 5 - 2 + 1/4 - 3/4 = 3 1/2 cups. Answer: \boxed{3 \frac{1}{2}}