Preheat a griddle to medium heat.: The air will begin to shimmer slightly above the cooking surface and you may hear a faint hiss when a drop of water sizzles, indicating it is hot enough. Getting the temperature right ensures a golden exterior without overcooking the inside, and maintains a steady cooking rhythm so pancakes brown evenly. A common mistake is starting on too high heat, which leads to dark exteriors and undercooked centers; if that happens, lower the heat and allow the griddle to cool for a minute.
In a large bowl, whisk together the flour, brown sugar, baking powder, salt, cinnamon, nutmeg, ginger and cloves; set aside.: As you whisk, small clouds of spice aroma will lift from the bowl, signaling an even distribution. Combining the dry components first prevents clumps of baking powder and patches of spice, which would create uneven flavor pockets. Be careful not to overblend once the wet ingredients join the mix, because overmixing develops gluten and can produce tougher pancakes.
In a medium bowl, whisk together the milk, pumpkin, egg, vegetable oil and vanilla extract. Pour the wet ingredients over the flour mixture and whisk gently until completely combined. Set aside for 5 minutes.: The batter will smell warmly spiced and appear slightly thick with visible streaks of pumpkin before it rests. This brief rest lets the flour hydrate and allows bubbles to form, contributing to a lighter texture. A frequent error is vigorous whisking that creates elastic batter; whisk just until homogenous and let the rest do the work.
Once the griddle comes to temperature, drizzle with vegetable oil and wipe off excess with a paper towel.: You should see a thin, glossy film on the surface but no puddles, which helps pancakes develop an even, golden crust without frying. The paper towel method prevents pooling oil that causes uneven frying and soggy edges. Avoid using too much oil, as that can make the pancakes greasy and interfere with browning.
Ladle 1/3-cup of the batter onto the griddle for each pancake. Cook for 2 to 3 minutes, or until the edges are set and the bubbles around the edges are open and set. Flip and cook on the second side for an additional 2 minutes, or until golden brown. Serve immediately. Leftover pancakes can be frozen for up to 1 month.: The batter will spread slightly into round discs, and you will notice small bubbles beginning to form at the surface within the first minute. Using a consistent ladle amount ensures uniformity so stacks finish cooking at roughly the same time. A typical misstep is crowding the griddle, which reduces heat and leads to uneven cooking; leave space between pancakes.
Cook for 2 to 3 minutes, or until the edges are set and the bubbles around the edges are open and set: You'll hear a gentle sizzle and see the batter become matte around the edges, an indication the internal structure is setting. The bubbles that form and then stabilize are your visual cue that the pancake is ready to flip, delivering an airy interior. Flipping too early yields a doughy center, while flipping too late can cause dryness, so watch those bubbles closely.
Flip and cook on the second side for an additional 2 minutes, or until golden brown: After flipping, the second side will take color quickly, so listen for the sound change from active sizzle to a softer hiss; that hints the moisture is evaporating and the crust is forming. The final color should be an even golden brown across the surface. Pressing down or flattening the pancake is a common error that compresses the structure, leading to dense results, so resist the urge to pat them.
Serve immediately: Serve while the pancakes are warm and release a fragrant steam of cinnamon and pumpkin . Hot pancakes have a tender, slightly springy interior with a pleasant surface caramelization from the sugars. Waiting too long can cause them to cool and lose fluffiness, so plan to stack and serve right away for the best texture.
Leftover pancakes can be frozen for up to 1 month: Cool completely before stacking with parchment between layers to prevent sticking, then transfer to an airtight container or plastic bag for freezing. When reheated, their texture and flavor remain surprisingly close to fresh, making them an excellent make ahead breakfast option. A pitfall is freezing while still warm, which traps steam and creates ice crystals that degrade texture on thawing, so always cool thoroughly.