Rinse quinoa. Prepare quinoa according to package directions; drain well and keep warm.
Meanwhile in a large saucepan combine the 1 3/4 cups strawberries, the sugar, cardamom, and salt. Heat over medium-low heat just until berries are warm. Stir in the half-and-half; heat through. Stir in the reserved quinoa and the vanilla.
Divide quinoa mixture evenly among serving bowls. Top evenly with the 1/4 cup sliced strawberries.