Orange Poppy Seed Loaf Cake

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This Orange Poppy Seed Loaf Cake is a gorgeous alternative to the classic lemon version. Zingy orange zest makes for a really bright bake, with the glaze just cutting through the acidity enough. This cake comes together in one bowl and requires no specialist equipment or ingredients! This is also a great way to use up any oranges (or clementines/tangerines/mandarins) that have been sitting in your fruit bowl for a while. All of these fruits will work, you just may want to use 2-3 if using smaller fruits vs a regular orange!

The glaze is a simple powdered sugar and milk combination so it really doesn’t take any time at all. Wait for the cake to cool fully before glazing. I like to pour the glaze while the cake is still in the pan, but only do this if you’ve lined/greased the pan extremely thoroughly, or you may have issues getting the cake out to slice! Alternatively, place the cake on a wire rack over a sheet pan and glaze there to minimise mess!

I love a simple cake that you can leave on the counter or on a cake stand for you to come back to and take a slice. This loaf doesn’t need a special occasion, but I think it’s a lovely thing to serve to friends or if you have visitors.

INGREDIENTS NEEDED for my Orange Poppy Seed Loaf Cake

There are no specialist ingredients or equipment required for this bake. I can find everything I need at my local supermarket or grocery store. Also, I use a standard 2 lb loaf tin for almost all of my loaf cake recipes. You can use an 8 inch square tin instead, just bring down the bake time by 5-10 minutes. To line a loaf tin, cut a piece of baking paper that is just narrower than the length of the tin. Then place this in the tin so that it drapes over the long sides. This will make removing the bake so much easier! 

• Unsalted Butter, Melted 
• Granulated Sugar
• Large Eggs
• All Purpose Flour (Plain Flour)
• Baking Powder
• Fresh Orange
• Poppy Seeds
• Icing Sugar (Powdered Sugar)
• Milk

Tips for making a great, moist loaf cake

• Ingredients: Use high-quality ingredients like fresh eggs, good quality flour, and real vanilla extract.
• Room Temperature: Ensure ingredients like eggs and butter are at room temperature before mixing. This helps achieve a smooth batter.
• Mixing Technique: Use the creaming method (beating butter and sugar until fluffy) or the sponge method (whipping eggs and sugar until thick and pale) to incorporate air into the batter.
• Don’t Overmix: Mix until just combined to avoid developing too much gluten, which can toughen the cake.
• Moisture Retention: Add a tablespoon of sour cream, yogurt, or buttermilk to the batter to help retain moisture.
• Proper Baking Time: Bake at the correct temperature and for the right amount of time to avoid drying out the cake. Use a toothpick to check for doneness.
• Cooling Properly: Cool the cake completely on a wire rack before removing it from the pan to prevent condensation from making it soggy.
• Storage: Store the cake properly by wrapping it tightly in plastic wrap or placing it in an airtight container to prevent it from drying out.
• Frosting: Only pour the glaze once the cake has fully cooled down. Scatter the almonds over the glaze before it sets, then let it firm up. Slices will look super neat if you refrigerate a short while before slicing.

Following these tips should help you achieve a deliciously moist sponge cake!

Troubleshooting/Common Mistakes to Avoid

Dense or heavy loaf

• Overmixing the batter can develop too much gluten and lead to a tight texture.
• Stir just until the dry ingredients are incorporated and no large streaks of flour remain.

Dry cake

• Measuring flour incorrectly is a common issue. Scooping directly from the bag can pack in too much flour.
• Spoon flour into your measuring cup and level it off, or use a kitchen scale if possible.

Weak orange flavor

• Using only orange juice without zest can result in a mild flavor.
• Orange zest holds the most aromatic oils, so always include it for a bright citrus taste.

Bitter aftertaste

• Zesting too deeply and including the white pith can make the cake bitter.
• Zest only the bright orange outer layer of the peel.

Poppy seeds sinking to the bottom

• This usually happens if the batter is too thin.
• Tossing poppy seeds lightly in flour before adding them can help keep them evenly distributed.

Loaf browning too quickly

• Orange loaf cakes can darken fast due to natural sugars in citrus.
• If the top browns early, loosely tent the loaf with foil for the remaining bake time.

Undercooked center

• Loaf cakes take longer to bake than you might expect.
• Always test doneness with a skewer inserted into the center. It should come out clean or with a few moist crumbs.

Cake sticking to the pan

• Skipping proper pan preparation often causes tearing.
• Grease the pan well and line it with parchment paper for easy removal.

Collapsed loaf after baking

• Opening the oven door too early or underbaking can cause the cake to sink.
• Avoid checking the cake until it’s mostly set and fully baked through.

Crumbly slices

• Cutting the loaf while it’s still warm can cause it to fall apart.
• Allow the cake to cool completely before slicing for clean, even pieces.

Storage and Make Ahead for Orange Poppy Seed Loaf Cake

To store a glazed loaf cake, begin by letting it cool completely at room temperature after baking. Then place the cake in an airtight container and remove when taking a slice! Alternatively, once cooled, wrap the loaf tightly in plastic wrap to seal out air and moisture. For short-term storage (1-2 days), keep the wrapped cake at room temperature in an airtight container or cake keeper to maintain its texture and moisture. While you can theoretically keep the cake for longer by placing in the refrigerator, I find it loses moisture too fast and the texture is affected. This cake is definitely best eaten fresh within a day or two of baking.

Avoid freezing glazed cakes, as the glaze may become sticky or lose its texture upon thawing. When ready to serve, allow the refrigerated cake to come to room temperature for optimal taste and texture. These steps will help preserve the freshness of your glazed loaf cake for enjoyable eating over several days.

I make my Orange Poppy Seed Loaf Cake using a 4×9″ loaf cake pan and recommend a high speed mixer for when combining the dry and wet ingredients (with a mixer like this). If you’re looking for other cake ideas check out this Almond Croissant Frangipane Loaf Cake. For videos and baking inspiration, head on over to my Instagram. If you make this recipe, don’t forget to drop it a star rating, leave a review or share a photo on your socials!