Blackberries are one of my favorite treats of summer, and one way I love to enjoy them is in these muffins! They’re easy to make, with a thick, creamy batter that bakes into yummy moist muffins with lots of blackberries in every bite. And sprinkling them with some coarse sugar before putting them in the oven gives these muffins a light sugary crusted top. I like the little sparkle the coarse crystal-like sugar gives the muffins, too!