Lightly grease a standard 12-14 cup Bundt pan; set pan aside.
Using an electric mixer, cream together butter and sugar on medium-high speed until light and fluffy (~3-4 minutes).
Add eggs one at a time, mixing on low after each addition.
Add salt and flour 1 cup at a time, mixing on low after each addition.
Add RC Cola and mix on low speed until a smooth batter forms (~1-2 minutes).
Pour batter into prepared Bundt pan. Bake at 325°F for 80-90 minutes, or until a toothpick inserted into the center of the cake comes out clean.
Allow cake cool in pan for 15 minutes and then invert onto a wire rack until completely cool.
For the Glaze
Using a small mixing bowl, whisk together all glaze ingredients. (Tip: Start with 3 Tbsp of milk. If the glaze is too thick to pour, add 1 more Tbsp of milk.)
Spoon glaze on top of the pound cake and then sprinkle chopped peanuts on top before the glaze sets.