Peaches And Cream Bunny Cake

Ingredients

• 6 cups chopped peaches (from 6 to 7 large or 12 medium)
• 1 1/2 cups (340 grams or 12 ounces) unsalted butter, at room temperature
• 1 1/2 cups (300 grams) granulated sugar
• 1 1/2 cups (285 grams) light brown sugar
• 1 tablespoon (15 ml) vanilla extract
• a few gratings of nutmeg
• 6 large eggs
• 2 cups (480 grams) sour cream
• 1 tablespoon baking powder
• 1 1/2 teaspoons baking soda
• 1 1/2 teaspoons fine sea or table salt
• 6 cups (780 grams) all-purpose flour
• 2 cups (455 grams or 16 ounces) unsalted butter, at room temperature
• 7 1/2 cups (from 2 1-pound boxes) powdered sugar, sifted if lumpy
• 1/2 cup (120 grams) sour cream, plus more if needed
• 1 tablespoon (15 ml) vanilla extract