Combine milk, water and quinoa in a medium saucepan. Bring to a boil over high heat.
Reduce heat to medium-low; cover and simmer 15 minutes or until most of the liquid is absorbed.
Turn off heat; let stand covered 5 minutes.
Stir in blackberries and cinnamon; transfer to four bowls and top with pecans. Drizzle 1 teaspoon agave nectar over each serving.