Preheat your oven to 425°. Spray 12 cups of a muffin tin with cooking spray.
Whisk together flour, baking powder, soda, and salt in a small bowl; set aside.
Place the blueberries in a small bowl and toss with a heaping tablespoon of the flour mixture. Set aside.
In a large bowl, whisk together the oil, sour cream, sugar, vanilla, almond extract, and eggs. Stir in the dry ingredients.
Gently fold in the blueberries (and all the flour in the bowl).
Divide the muffin batter between the twelve muffin cups. Sprinkle the top of each muffin with about 1/2 teaspoon of coarse sugar.
Bake at 425° for 5 minutes, then turn the heat down to 350°. Bake for an additional 15-20 minutes, or till lightly browned around the edges.
Let sit in the pan for about 5 minutes, then remove and cool on a wire rack.