Pecan Muffins
["1 3/4 c. sifted all-purpose flour", "1/2 c. sugar", "1 tsp. baking powder", "1/2 tsp. baking soda", "1/2 tsp. salt", "1/2 c. sour cream", "1/2 c. peach preserves", "1 egg", "flour", "1 tsp. vanilla extract", "2/3 c. chopped pecans, toasted"]
["Position rack in center of oven and preheat to 400\u00b0.", "Line 10 muffin cups with muffin papers."]
["flour", "sugar", "baking powder", "baking soda", "salt", "sour cream", "peach preserves", "egg", "flour", "vanilla extract", "pecans"]