Pumpkin Earthquake Cake

Preheat the oven to 350 degrees F (175 degrees C). Grease a 9x13-inch baking dish.

Microwave butter in a bowl for 30 seconds and stir. Continue to microwave at 10-second intervals until butter is completely melted. Set aside to cool while you prepare the cake.

Combine cake mix, eggs, pumpkin, milk, oil, and pumpkin spice in a bowl. Beat with a hand mixer until batter is well combined. Pour into the greased baking dish.

Combine melted butter and Neufchatel cheese in a bowl; beat with a hand mixer until well incorporated, 3 to 4 minutes. Mix in powdered sugar, 1/2 cup at a time, until well combined. Add vanilla and salt; mix to combine. Drop spoonfuls of Neufchatel mixture onto the cake batter. Swirl mixture with a knife. Sprinkle pumpkin spice chips on top.

Bake in the preheated oven until a toothpick inserted in the center comes out clean, 38 to 42 minutes. Remove from the oven and transfer to a wire rack. Cool completely before removing from the baking dish.