Kentucky Butter Cake with Salted Caramel

This Kentucky Butter Cake is a sweet cake that is completely homemade. With a hint of salted caramel and butter cake, it is a must-have at events and gatherings.
Ingredients
3 cups / 13 1/2 ounces flour (all-purpose)
2 cups sugar (granulated)
1 teaspoon salt
1 teaspoon baking powder
1/2 teaspoon baking soda
1 cup buttermilk or fermented milk
1 cup butter (room temperature)
2 teaspoons vanilla
4 large eggs
Sauce
3/4 cup sugar
1/3 cup butter
3 tablespoons water
2 teaspoons vanilla