Look at the wrapper. Cupcake liners are usually fluted and colorful; muffin liners are often flat or grease-proofed in plain brown or white. High-end bakeries may blend the line, but the rule holds.
Check the density. Pick it up. A muffin feels heavier for its size—it’s packed with fruit or nuts. A cupcake feels lighter, even with frosting, because of that aerated batter.
Ask the baker. The best trick? Just ask. “Is this a muffin or a cupcake?” If they hesitate, it’s probably a muffin with frosting—a hybrid that’s delicious but ethically questionable.
Fun Little Facts to Impress Friends
The first muffin recipe appeared in a 1747 British cookbook, while cupcakes were first recorded in 1828 in an American cookbook—America’s sweetheart. Muffins won the breakfast round; cupcakes own dessert.
Vegan or gluten-free versions blur the lines further, but purists insist: a muffin without frosting is just a cake that’s lost its way. Meanwhile, some coffee shops sell “muffins” that are secretly cupcakes—watch for the giveaway buttercream.
In many countries, “muffin” can refer to a yeast-risen English muffin (the toasted kind for eggs Benedict). Don’t confuse that with the American muffin we’re discussing—unless you want a very confusing breakfast.