In a saucepan, stir berries (reserve some for garnish), sugar and 2 tbsp. liqueur over medium heat; bring to a simmer. Stir in remaining 2 tbsp. liqueur; remove from heat. Spoon 1 1/2 tbsp. warm berry mixture into each of 4 bowls. Top each with 1 bread round. Repeat layering 2 times. Top with remaining sauce. Gently press down. Refrigerate for 20 minutes. Dollop with creme fraiche and garnish with the fresh berries.