Farmhouse Buttermilk Cake

Ingredients

• 1/4 cup butter, very soft
• 1 cup light or dark brown sugar, firmly packed
• 1 large egg
• 1 cup buttermilk
• 1 teaspoon vanilla extract
• 1 1/2 cups all-purpose flour
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 3 tablespoons butter, melted
• 1/2 cup light or dark brown sugar, firmly packed
• 2 tablespoons half-and-half
• 1/8 teaspoon salt
• 3/4 cup pecans, diced