1-Step 1: Preheat and Prepare Start by preheating your oven to 350°F and coating a half sheet pan with nonstick spray, then line it with parchment paper. Gather all your ingredients to make the process smooth and efficient. This step ensures everything is ready for mixing the batter quickly. Mix the sugars, butter, oil, eggs, and vanilla in a bowl until smooth. Add the spices, baking soda, powder, and salt, mixing briefly. Follow by stirring in the flours until just combined, then fold in the carrots, pineapple, coconut, and nuts.

2-Step 2: Bake the Cake Pour the batter into the prepared pan and bake for 22-25 minutes, or until a toothpick comes out clean. Let the cake cool completely on a rack before moving on. This cooling step is key to keeping the layers intact when assembling.

3-Step 3: Make the Frosting In a separate bowl, beat the softened cream cheese and butter until combined, then gradually add powdered sugar until creamy. For details on cream cheese, check the cream cheese nutrition facts to see how it fits into balanced eating.

4-Step 4: Assemble the Jars Once cooled, cut the cake into rounds using a cutter that fits your jars. Layer the cake and frosting in the jars, pressing lightly after each addition. Top with toasted nuts and refrigerate; they last up to 5 days or can be frozen for 3 months. This method makes for easy, portable desserts. Total prep is about 35 minutes, with 25 minutes of cooking, for around an hour overall.