Sticky Rhubarb Muffins
["1 c. finely chopped rhubarb", "1/4 c. cold butter", "1/3 c. softened butter", "1/2 c. packed brown sugar", "1/3 c. sugar (white)", "1 egg", "1 1/2 c. all-purpose flour", "2 tsp. baking powder", "1/2 tsp. salt", "1/2 tsp. nutmeg", "1/2 c. milk"]
["With pastry blender, mix 1/4 cup cold butter and the brown sugar.", "Add rhubarb and mix well.", "Spoon into bottom of 12 greased muffin cups.", "Cream remaining 1/3 cup butter, white sugar and egg. Sift flour, baking powder, salt and nutmeg.", "Add to creamed mixture alternately with milk, mixing just enough to blend.", "Spoon into muffin cups.", "Bake at 350\u00b0 for 20 to 25 minutes."]
["rhubarb", "cold butter", "butter", "brown sugar", "sugar", "egg", "flour", "baking powder", "salt", "nutmeg", "milk"]