Step 1: Prepare for Baking
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Preheat your oven to 350°F (175°C).
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Grease a 9×13-inch baking pan or line it with parchment paper, leaving an overhang on two sides for easy lifting.
Step 2: Make the Cake Batter
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In a large bowl, whisk together the vegetable oil, granulated sugar, brown sugar, eggs, and vanilla extract until the mixture is smooth and well-combined.
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In a separate bowl, whisk the flour, baking powder, baking soda, salt, cinnamon, nutmeg, and cloves.
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Gradually add the dry ingredients to the wet ingredients, stirring with a spatula until just combined. Be careful not to overmix.
Step 3: Fold in the Goodies
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Gently fold the grated carrots, drained pineapple, and nuts (if using) into the batter until everything is evenly distributed.
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Pour the batter into your prepared pan and spread it into an even layer.
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Bake for 30-35 minutes, or until the top is springy to the touch and a toothpick inserted into the center comes out clean.
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Place the pan on a wire rack and allow the bars to cool completely before frosting.
Step 5: Create the Cream Cheese Frosting
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While the bars cool, use an electric mixer to beat the softened cream cheese and butter together on medium speed until smooth and creamy.
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Gradually add the powdered sugar, beating on low speed until incorporated, then increase the speed to high and beat until fluffy.
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Beat in the vanilla extract and a pinch of salt until combined.
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Once the bars are completely cool, spread the frosting evenly over the top.
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For the cleanest slices, chill the frosted bars in the refrigerator for 30 minutes.
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Use a sharp knife to slice into bars. For a neat presentation, wipe the knife clean between cuts.
💡 Baker’s Notes & Tips
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Grating Carrots: For the best texture, use the small holes on your box grater. Pre-shredded bagged carrots are often too thick and dry.
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Drain the Pineapple Well: Press the crushed pineapple in a fine-mesh strainer to remove excess liquid. This prevents the bars from becoming soggy.
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Room Temperature is Key: Ensure your cream cheese and butter for the frosting are truly softened. This is the secret to a smooth, lump-free frosting.
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Storage: Store these bars in an airtight container in the refrigerator for up to 5 days. The flavors meld and become even more delicious the next day