Combine first 4 ingredients in a 1-quart glass measure. Gradually add water and lemon juice, stirring with a wire whisk until blended. Stir in blueberries. Cover with wax paper, and microwave at HIGH 5 to 6 minutes or until thickened and bubbly, stirring every 2 minutes. Serve warm over vanilla frozen yogurt or pancakes. Yield: 1-2/3 cups (serving size: 1 tablespoon). Calories 18 (0% from fat), protein 0. 1g, Fat 0g (sat 0g, mono 0g, poly 0g), carb 4.7g, Fiber 0.5g, Chol 0mg, iron 0.1mg, Sodium 2mg, calcium 4mg