Fleur De Sel Cupcakes

Ingredients

• FOR THE CUPCAKES:
• 2 sticks Butter
• 1-1/4 cup Sugar
• 2 whole Eggs
• 1 cup Buttermilk
• 2 teaspoons Baking Soda
• 2-1/2 cups Flour
• 2 ounces, weight Dark Baking Chocolate
• 2 teaspoons Vanilla
• _____
• FOR FROSTING:
• 1 stick Butter
• 1 teaspoon Vanilla
• 1/4 teaspoons Salt
• 4 cups Powdered Sugar
• 1 cup Cocoa
• 1/2 cups Milk Or Cream
• _____
• FOR THE FILLING:
• 1 cup Sugar
• 6 Tablespoons Butter
• 1/3 cups Cream Or Milk (plus More As Needed)
• Fleur De Sel Or Other Flaky Sea Salt, For Garnish