Blueberry, Blackberry, and Lemon Zest Muffins

Blueberry, Blackberry, and Lemon Zest Muffins. Adapted from The Joy of Vegan Baking Blueberry Lemon Muffins Recipe. The crumb topping recipe is veganized from the Food & Wine Crumb Topping Recipe.

Notes:

1. I used agave instead of granulated sugar and whole wheat pastry flour instead of white, so these turned out denser and darker than they might otherwise if I had used the suggested ingredients.

2. I really like foil muffin tin liners. The muffin gets crispy, pops out cleanly, and does not stick, which often happens with paper liners.