Slow Cooker Hot Fudge Sundae Cake

Let me first say this was soooooooo YUMMY!
(I did double the recipe... extra large oval slow cooker being used)

1 cup Gold Medal® all-purpose flour

1/2 cup granulated sugar

2 tablespoons baking cocoa

2 teaspoons baking powder

1/2 teaspoon salt

1/2 cup milk

2 tablespoons vegetable oil

1 teaspoon vanilla

1/2 cup chopped nuts (I left out)

3/4 cup packed brown sugar

1/4 cup baking cocoa

1 1/2 cups hot water

(2 cups of chocolate chips)

1.Spray inside of 2- to 3 1/2-quart slow cooker with cooking spray. Mix flour, granulated sugar, 2 tablespoons cocoa, the baking powder and salt in medium bowl. Stir in milk, oil and vanilla until smooth. Stir in nuts. (I did leave out the nuts but added in a cup of chocolate chips) Spread batter evenly in slow cooker.

2.Mix brown sugar and 1/4 cup cocoa in small bowl. Stir in hot water until smooth. (I added in a cup of chocolate chips) Pour evenly over batter in slow cooker.

3.Cover and cook on high heat setting 2 hours to 2 hours 30 minutes or until toothpick inserted in center comes out clean.

4.Turn off slow cooker. Let cake stand uncovered 30 to 40 minutes to cool slightly before serving. Spoon warm cake into dessert dishes. Spoon sauce over top.