German Chocolate Snack Cake With Coconut-Pecan Frosting

Ingredients

• 2 cups (280 grams) all-purpose flour
• 1/4 cup (21 grams) unsweetened cocoa powder
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon kosher salt
• 1 cup boiling water
• 4 ounces unsweetened baking chocolate
• 1/2 teaspoon espresso powder, optional (for deeper chocolate flavor)
• 2 cups (400 grams) granulated sugar
• 4 large eggs
• 1 cup canola oil
• 2 teaspoons vanilla extract
• 3 large egg yolks
• 8 ounces evaporated milk
• 1 1/2 cups (323 grams) lightly packed brown sugar
• 4 ounces (113 grams, 1 stick) unsalted butter
• 1 teaspoon vanilla
• 1/4 teaspoon kosher salt
• 2 1/2 cups sweetened, shredded coconut
• 1 1/2 cups chopped pecans