Go Back
+ servings
Sourdough pumpkin cake with cream cheese frosting on a metal plate decorated with cinnamon sticks and pumpkins.

Tray Bake Sourdough Pumpkin Cake With Cream Cheese Frosting

AndreeaB
This tray bake sourdough pumpkin cake with cream cheese frosting is the perfect fall treat, combining warm, spiced flavors with a light, moist texture. Packed with pumpkin goodness and aromatic spices like cinnamon and ginger, it’s a comforting dessert that’s easy to make and ideal for sharing. Topped with a rich and tangy cream cheese frosting, each bite is a delightful balance of sweetness and spice.
No ratings yet
Prep Time 25 minutes
Cook Time 35 minutes
Total Time 1 hour
Course Dessert
Cuisine American
Servings 10 to 12 servings
Calories 378 kcal

Equipment

  • 9"x13" baking tray (mine is 2.5" deep) 23cm x 33cm (7cm deep)
  • Hand or stand mixer

Ingredients
  

For the pumpkin cake

  • 15 oz pumpkin puree can approx. 415g
  • 1/3 cup sourdough discard approx. 80g
  • 2 cups all-purpose flour (plus 1-2 tbsp extra, if needed) approx. 240g
  • 1 cup granulated sugar (I used unrefined) approx. 200g
  • 1 cup butter (softened) approx. 227g
  • 4 large eggs (room temperature)
  • 1 tsp bicarbonate of soda (baking soda)
  • 2 tsp baking powder
  • 3 tsp ground cinnamon
  • 1/2 tsp ground ginger (optional)
  • 1/2 tsp nutmeg (optional)
  • 1/2 tsp all spice (optional)
  • 1/2 tsp ground cloves (optional)
  • a pinch of salt (only if you use unsalted butter

For the cream cheese frosting

  • 8 oz cream cheese approx. 226g
  • 2 cups icing sugar approx. 320g
  • 1/4 cup softened butter approx. 57g
  • 1 tsp vanilla extract
  • zest from 1 orange (optional)

Instructions
 

Make the pumpkin batter.

  • In a large mixing bowl (or the bowl of your stand mixer) cream together the butter and sugar.
    1 cup butter (softened), 1 cup granulated sugar (I used unrefined)
  • Add in the eggs and mix until frothy.
    4 large eggs (room temperature)
  • Add the spices (cinnamon, ginger, nutmeg, ground cloves, and all spice).
    3 tsp ground cinnamon, 1/2 tsp ground ginger (optional), 1/2 tsp nutmeg (optional), 1/2 tsp all spice (optional), 1/2 tsp ground cloves (optional)
  • Mix in the pumpkin puree at the same time.
    15 oz pumpkin puree can
  • Make sure everything is well blended and turn off your mixer.
  • Using a spatula (or a spoon) mix in the sourdough discard.
    1/3 cup sourdough discard
  • Add the salt, bicarbonate of soda (baking soda), and baking powder.
    1 tsp bicarbonate of soda (baking soda), 2 tsp baking powder, a pinch of salt (only if you use unsalted butter
  • Start incorporating the flour into the batter. Don't overmix.
    2 cups all-purpose flour (plus 1-2 tbsp extra, if needed)
  • If your batter is too runny, add an extra tablespoon (or two) of flour. No more than that as you don't want a stiff batter.
  • Let the batter rest while preheating the oven to 350°F (176°C). This will give the batter time to activate and create a fluffy crumb.
  • Prepare a 9"x13" baking tray with parchment paper.
  • Pour the batter into the tray.
  • Bake at 350°F (176°C) for 35 minutes or until golden brown on top. Insert a toothpick in the centre of the cake to check if the batter is baked. The toothpick should come out clean.
  • Let the cake cool down while you prepare the frosting.

Make the cream cheese frosting.

  • Clean your mixing bowl from the pumpkin batter you made and use it for the cream cheese frosting.
  • Mix all the ingredients together (cream cheese, icing sugar, softened butter, vanilla extract, and orange zest).
    8 oz cream cheese, 2 cups icing sugar, 1/4 cup softened butter, 1 tsp vanilla extract, zest from 1 orange (optional)
  • Add extra icing sugar if you prefer a stiffer frosting. I like mine creamy and soft.
  • Once your cake is at room temperature, layer the cream cheese frosting on top.
  • You can either refrigerate the cake for future use or slice the cake into bars and serve.
  • I prefer serving after it had some time in the fridge as I like a cold cream cheese frosting.

Nutrition

Serving: 197gCalories: 378kcalCarbohydrates: 78gProtein: 8gFat: 33g
Tried this recipe?Let us know how it was!