Pattern: "Granny Square 7" from 99 Granny Squares to Crochet from Leisure Arts.
To get the size I needed, I left off the last round of the pattern (it was more popcorn stitches) and substituted a round of single crochet. If I made this again, I’d leave out a ch stitch or two from the corners of the white round because the corners are really pointy.
Looking at it now, this totally makes me think of a slice of watermelon, but that's definitely not what I had planned! This is another 7" Wool of the Andes square.