"Peanut butter protein powder" refers to a type of powdered supplement that combines the taste and benefits of peanut butter with added protein. It can be mixed with liquids like water or milk to create a protein-rich drink. Full definition
Add your favorite peanut butter protein powder and start your day off the right way... by having doughnuts for breakfast. (myskinnysweettooth.com)
I'm going to give that method a try with soy milk ice cubes and my favorite chocolate peanut butter protein powder for an indulgent drink that's totally healthy. (theplantphilosophy.com)
For a twist, try substituting peanut butter protein powder and sprinkling chocolate chips on top. (bodybuilding.com)