Step 1: Preheat your oven to 375°F (190°C).
Step 2: Spread the softened butter generously on both sides of each slice of bread.
Step 3: Place the buttered bread slices in your baking dish, overlapping them slightly if necessary to fit.
Step 4: In a mixing bowl, whisk together the heavy cream, eggs, salt, and pepper until well combined.
Step 5: Pour the cream and egg mixture evenly over the bread slices, letting it sit for about 10 minutes.
Step 6: Place the baking dish in the preheated oven and bake for about 25-30 minutes until golden brown.
Step 7: Once baked, sprinkle with fresh chives before serving.