01 -
Preheat the oven to 350°F. Coat two 9-inch round cake pans with grease and sprinkle flour.
02 -
Cream butter and sugar until smooth and fluffy. Add eggs one at a time. Mix in melted butterscotch along with the vanilla. Combine dry ingredients in another bowl and gradually add them to the wet mixture, alternating with buttermilk.
03 -
Pour the batter evenly into the pans. Bake for 25 to 30 minutes or until a toothpick stuck in the center comes out clean. Cool the cakes in pans for 10 minutes, then transfer them to cooling racks.
04 -
Beat butter until soft and creamy. Add powdered sugar, butterscotch sauce, cream, and vanilla. Whip everything together until it’s fluffy.
05 -
Toss together pecans, pretzels, brown sugar, and melted butter. Spread on a sheet pan and bake for 8–10 minutes, stirring once, until toasted. Let it cool.
06 -
Layer the cake with frosting in the middle. Cover the top and sides with more frosting. Scatter the crunchy topping over the finished cake and let it chill for 30 minutes before digging in.