Fruity Yogurt Muffins
["1 c. chopped fresh rhubarb", "1 tsp. baking powder", "1/4 tsp. salt", "1 (8 oz.) carton strawberry-banana low-fat yogurt", "2 Tbsp. vegetable oil", "1 egg, lightly beaten", "1 Tbsp. sugar", "2 c. all-purpose flour, divided", "1/4 tsp. baking soda", "1/4 c. sugar", "1/4 c. unsweetened orange juice", "1 tsp. vanilla extract", "vegetable cooking spray"]
["Combine rhubarb and 2 tablespoons of flour in a small bowl. Toss well and set aside."]
["fresh rhubarb", "baking powder", "salt", "strawberry-banana", "vegetable oil", "egg", "sugar", "flour", "baking soda", "sugar", "orange juice", "vanilla extract", "vegetable cooking spray"]