Combine first 5 ingredients in a large mixing bowl; make a well in center of mixture. Stir together butter, eggs, and vanilla; add to dry ingredients, and stir just until moistened.
Pecan Pie Muffins: Spoon Pecan Pie Muffin Batter evenly into lightly greased miniature muffin pans, filling three-fourths full. Bake at 425° for 8 to 10 minutes. Makes 24 muffins.