Preheat oven to 350F. Grease and flour one sheet cake pan. Place pecans in bottom of pan. Mix remaining cake ingredients 2 minutes. Pour batter over pecans. Bake 1 hour, cool and top with glaze.
Boil butter, water and sugar 1 minute, Add rum. Boil 1 minute more. Pour over cake.
Cajun Country -- New Iberia, Louisiana