Buttermilk Texas Sheet Cake

Ingredients Cake

• 2-1/2 cups all-purpose flour
• 2 cups sugar
• 1/2 cup oil
• 1 cup water
• 1 stick butter
• 2 eggs
• 2 tsp. vanilla
• 1 tsp. cinnamon
• 1-1/2 tsp. baking soda
• 2/3 cup buttermilk

Frosting

• 6 Tbsp. butter
• 1 cup light brown sugar (packed)
• 1/2 cup milk
• 4 to 5 cups powdered sugar