Step 1Heat the oven to 325 degrees. Grease and flour a 10-inch tube pan.
Step 2In a mixing bowl, combine the flour, baking powder and salt and stir with a fork; set aside. Into a small bowl, pour the milk and add the vanilla; set aside.
Step 3With a mixer, beat the butter at high speed until light and fluffy. Add the brown sugar in three batches, then add all of the white sugar, beating after each addition. Add the eggs one by one, beating well after each addition.
Step 4Reduce the speed to low and add half of the flour mixture and then half the milk, beating until the flour or milk has disappeared into the batter. Add the rest of the flour and the rest of the milk in the same way. Quickly scrape the batter into the tube pan and bake until the cake is nicely browned at the edges, springs back when lightly touched at the center, and a wooden skewer inserted into the center comes out clean, about 1 hour and 10 minutes.
Step 5Remove the pan from the oven and leave it on a wire rack for 20 to 30 minutes. Loosen the cake from the pan with a table knife and turn it out onto a wire rack or plate, then leave it to cool completely. When cool, glaze with caramel glaze.
Step 1In a large saucepan, place the butter and brown sugar over medium heat. Stir until the butter melts and blends with the brown sugar to a smooth sauce, 2 to 3 minutes.
Step 2Add the milk and let the icing come to a gentle boil. Stir well, remove from the heat and add the powdered sugar and vanilla. Beat well with a mixer, whisk or spoon until the glaze thickens and loses a little of its shine, 1 or 2 minutes.
Step 3Use at once. If the glaze hardens, stir in 1 or 2 spoonfuls of evaporated milk to soften it.