Cinnamon French Toast

Ingredients

• butter (for greasing)
• 1 loaf crusty sourdough or French bread
• 8 whole eggs
• 2 cups whole milk
• 1/2 cup heavy whipping cream
• 1/2 cup granulated sugar
• 1/2 cup brown sugar
• 2 tablespoons vanilla extract
• 1/2 cup all-purpose flour
• 1/2 cup brown sugar (firmly packed)
• 1 teaspoon ground cinnamon
• 1/4 teaspoon salt
• nutmeg (freshly grated, to taste)
• 1 stick cold butter (cut into pieces, plus more for serving)
• pancake syrup (warm, for serving)
• 1 cup fresh blueberries (for serving)