Mami’s Rum Cake – Garden & Gun

Ingredients

• 1 cup finely chopped walnuts
• 1 box butter-flavor cake mix
• 1 (3.4-ounce) box instant vanilla pudding mix
• Unsalted butter (amount specified by cake mix)
• Eggs (amount specified by cake mix)
• ¼ cup white rum
• ¼ cup (4 tbsp.) unsalted butter
• 1 cup light brown sugar
• ½ cup white rum
• ¼ cup water