1. Preheat oven to 325°. Drain spinach well, pressing between paper towels to remove excess water.
2. Stir together spinach, cream cheese, Parmesan cheese, and next 3 ingredients in a medium bowl. Top each bread slice with 2 Tbsp. cheese mixture. Sprinkle with pine nuts. Place bread slices on a baking sheet.
3. Bake at 325° for 10 minutes or until thoroughly heated and nuts are toasted.