This is an easy pattern. Circles are easy to crochet in general in simple dc, sc, etc.: just keep increasing groupings one more stitch farther apart for each and every new row and the circle should lay flat even if you keep going like that for forever.
Cool & Easy Crochet Blankets With Lots of Tutorials and Patterns
Skittles blanket, free pattern by Susan Carlson shown in photo using 10 colors. Center rows are an easy repeat working only SC & DC. Border mostly HDC, main color yarn is carried along each row. Size easy to adjust. Nice texture, might be a good blanket f
Squishy soft blanket with no big holes. Chain an even number of chains plus 3 more. DC in 4th chain. SC in next chain. Repeat: DC then SC to end. Chain 3 then turn. Repeat for each row: *DC, SC* to end of row. Ch 3. The chain 3 never counts as a stitch. With Bernat Blanket Yarn.