Blinis with Smoked Salmon

INGREDIENTS

• 1/4 pound (1 stick) unsalted butter
• 1/3 cup buckwheat flour
• 2/3 cup all-purpose flour
• 1/2 teaspoon baking powder
• 1/2 teaspoon salt
• 1 large egg
• 3/4 cup plus 2 tablespoons milk
• 1/2 pound smoked salmon, thinly sliced
• 4 tablespoons creme fraiche
• Fresh dill, for garnish