Preheat oven to 350 F and line muffin tins with 18 liners. Set out your frosting ingredients to bring to room temperature.: As the oven warms you will notice a slight hum and a wave of rising heat, which is important because an oven at the correct temperature gives you even rise and consistent browning, preventing the centers from sinking. The liners help the cupcakes release cleanly, and they prevent the edges from sticking to the pan. A common mistake is skipping the liner or using cold pans, which can cause uneven baking or stuck cupcakes. If you use metal pans, expect a faster crisper edge compared to silicone. Make sure the racks are centered so heat circulates evenly, and avoid opening the oven door during the first part of baking because temperature loss can cause collapse.
In a large mixing bowl, combine flour, sugar, baking soda, baking powder, cinnamon, cloves, nutmeg, allspice and salt. Whisk together.: Allowing ingredients for the frosting to come to room temperature creates a smoother, more stable frosting that whips up evenly and holds structure. You will notice chilled cream cheese and butter resisting incorporation, which can lead to a lumpy texture if you beat them cold. A quick tip is to cut cold butter into small pieces so it softens uniformly. Avoid microwaving to speed things up, because that can make the fats separate and ruin the texture.
Whisk in vegetable oil, eggs, and applesauce, stirring until well combined.: When you whisk the dry ingredients together the mixture should look uniform and slightly aerated, which helps distribute the leavening so the cupcakes rise evenly. This step removes pockets of baking powder or soda that could create bitter pockets in the finished cupcake. A common oversight is insufficient whisking, which results in uneven flavor and rise. Take time to break up any clumps of flour or spice so every scoop of batter tastes consistent.
Using a spatula, fold in grated carrots, chopped nuts and raisins. Fold just until ingredients are incorporated into the batter.: As you incorporate the wet into the dry, watch the batter change from powdery to glossy and slightly fluid, signaling proper hydration. The oil brings sheen and moisture, while the eggs add body. Over mixing here can develop gluten and make the cupcakes tough, so stop once you see a smooth, homogeneous batter with no streaks of flour. A frequent error is vigorous beating that creates a gummy texture, so fold gently and intentionally.
Divide the batter evenly between 18 cupcake liners, filling about 2/3 full. Bake at 350°F for 20 minutes or until a toothpick inserted into the center comes out clean. Cool in pans for 3-5 minutes, then transfer to a wire rack and cool completely to room temperature before adding Cream Cheese Frosting.: Folding is all about gentle motion to keep the batter tender while evenly distributing the add ins. The grated carrots will release moisture that slightly thins the batter and adds natural sweetness, and the nuts bring textural contrast. If you over fold, the batter can deflate and the crumb will be denser. Look for an even distribution of carrot shreds and fruit, and stop as soon as they disappear into the batter to preserve lightness.
Divide the batter evenly between 18 cupcake liners, filling about 2/3 full: Filling each liner consistently ensures uniform baking times and appearance. As you scoop, the batter should fall slowly from your spoon or scoop, not drip, which tells you the hydration is right. Misjudging fill levels leads to domes that are too tall or flat cupcakes that are underbaked. Use an ice cream scoop for control and tap the tray gently to settle the batter and remove air pockets, but do not over tap which can compress the lift.
Bake at 350°F for 20 minutes or until a toothpick inserted into the center comes out clean: The oven will scent the kitchen with warm spices and a toasty sweetness as the tops develop a light golden color, a sign the sugars are caramelizing. Listen for a faint crackle as the crust sets. When you insert the toothpick it should come out with a few moist crumbs, not wet batter, indicating the crumb is cooked but not dried out. Opening the oven early or baking too long causes dryness, so check near the end of the suggested time and adjust for your oven quirks.
Cool in pans for 3 to 5 minutes, then transfer to a wire rack and cool completely to room temperature before adding Cream Cheese Frosting: The brief rest in the pan lets the cupcakes finish setting and reduces sticking when you turn them out. Moving them to a wire rack prevents the bottoms from becoming soggy and allows even cooling, which is crucial because warm cupcakes will melt the frosting. A common slip is frosting while the cupcakes are still warm, which creates runny decoration. Be patient, and you will get clean, well defined frosting that holds its shape.