Christmas Rum Cake

Name: Christmas Rum Cake
Prep time: 30 min
Cook time: 1 h
Total time: 1 h 30 min
Cuisine: American, Southern
Ingredients: Baking spray; Flour, for dusting pan; 1 c. chopped pecans; Brown sugar (optional); 1 (about 18-oz.) box yellow cake mix; 1 (about 3.5-oz.) package instant vanilla pudding mix; 4 whole eggs; 1/2 c. cold water; 1/2 c. canola oil; 1/2 c. rum (dark or light is fine); 3/4 c. butter; 1 1/2 c. granulated sugar; 3/4 c. rum