Cake:

• 2 ⅔ cups all-purpose flour (333 g)
• 2 cups granulated sugar (400 g)
• 1 teaspoon baking powder
• ½ teaspoon baking soda
• 1 teaspoon table salt
• ½ cup unsalted butter (113 g, cut into 8 pieces)
• ¼ cup avocado, vegetable, or canola oil (60 ml)
• 1 Tablespoon lime or key lime zest (usually about 2 limes)
• 1 ½ Tablespoons key lime juice
• 1 ½ scant cups whole milk (333 ml)
• 1 teaspoon vanilla extract

Key Lime Curd:

• ⅓ cup key lime juice (80 ml)
• 2 Tablespoons granulated sugar
• ¼ teaspoon table salt
• 2 Tablespoons unsalted butter (28 g, cut into pieces)

Cream Cheese Frosting:

• ¾ cup unsalted butter (170 g, softened)
• 6 oz cream cheese (170 g, softened)
• 4–5 cups powdered sugar (500–625 g)
• ¼ cup graham cracker crumbs (28 g for decorating)