Preheat the oven. Set to 400°F (200°C). Line a 12-cup muffin tin with paper liners or grease lightly.
Mix dry ingredients. In a large bowl, whisk flour, baking powder, baking soda, and salt until combined.
Whisk the wet ingredients. In a separate bowl, whisk sugar, brown sugar, eggs, yogurt, oil, vanilla, and lemon zest until smooth.
Combine wet and dry. Pour wet mixture into dry.
Gently fold with a spatula until just combined. A few small lumps are fine—do not overmix.
Prepare the blueberries. Toss blueberries with 1 tablespoon flour to help prevent sinking. Fold them gently into the batter.
Fill the muffin cups. Divide batter evenly among the cups, filling each about 3/4 full.
Sprinkle with coarse sugar if using.
Bake hot, then reduce heat. Bake at 400°F (200°C) for 5 minutes to help with domed tops, then reduce to 350°F (175°C) and bake 12–15 more minutes. They’re done when a toothpick comes out with a few moist crumbs.
Cool and enjoy. Let muffins rest in the pan 5 minutes, then transfer to a rack. Cool slightly before eating so the crumb sets.