Best Skillet Texas Sheet Cake Recipe - How to Make Skillet Texas Sheet Cake

Ingredients

• 1 c. all-purpose flour
• 1 c. granulated sugar
• 2 tbsp. unsweetened cocoa powder
• 1/2 tsp. baking soda
• 1/2 tsp. kosher salt
• 1/4 tsp. ground cinnamon
• 1/2 c. (1 stick) unsalted butter
• 1 large egg
• 1/4 c. buttermilk
• 1/2 tsp. pure vanilla extract
• 3 tbsp. unsalted butter
• 1 tbsp. unsweetened cocoa powder
• 3 tbsp. heavy cream
• 1 c. confectioners' sugar
• 1/4 c. toasted pecans, finely chopped, plus more for garnish
• Vanilla ice cream, if desired