Yes, matcha cookies contain caffeine. Matcha is a powdered green tea, and its caffeine survives the baking process largely intact. How much caffeine ends up in each cookie depends on the recipe, but a typical homemade matcha cookie contains roughly 5 to 70 mg of caffeine, putting it somewhere between a cup of green tea and a small cup of coffee.
How Much Caffeine Is in a Matcha Cookie
High-quality matcha powder contains about 34 mg of caffeine per gram, though the range across different products runs from 19 to 44 mg per gram. The caffeine in your cookie comes down to how much matcha the recipe calls for and how many cookies the batch makes.
Recipes vary widely. A matcha-forward recipe might use 30 grams of matcha powder for 15 cookies, which works out to about 2 grams of matcha per cookie. At 34 mg per gram, that’s roughly 68 mg of caffeine in a single cookie, comparable to a shot of espresso. A lighter recipe might use just 4 teaspoons of matcha across 8 cookies, landing closer to 1 gram of matcha per cookie, or about 34 mg of caffeine. Store-bought matcha cookies often use even less matcha (sometimes just enough for color and flavor), so they may contain as little as 5 to 15 mg per cookie.
If you’re sensitive to caffeine or giving matcha cookies to kids, check the recipe or label. A deeply green cookie almost always signals more matcha, and more matcha means more caffeine.
Baking Doesn’t Remove the Caffeine
Caffeine is a remarkably heat-stable molecule. Its melting point sits around 460°F (238°C), well above the 325 to 375°F range where most cookies bake. Research on matcha stored at elevated temperatures confirms this: even at 176°F (80°C) over an extended period of days, caffeine levels only dropped to about 60% of their starting value. A cookie spending 10 to 15 minutes in the oven retains nearly all of its original caffeine. Other compounds in matcha, particularly antioxidants, are more sensitive to heat, but caffeine is not one of them.
Matcha Caffeine Feels Different Than Coffee Caffeine
Matcha contains an amino acid called L-theanine that changes how your body responds to its caffeine. L-theanine promotes a calm, focused alertness rather than the jittery spike many people associate with coffee. This effect holds up even when matcha is baked into cookies. A study published in Heliyon tested matcha cookies specifically and found that participants who ate cookies made with high-theanine matcha (4.5 grams of matcha across three cookies daily) showed measurably lower stress markers than those who ate placebo cookies. The key was the ratio of stimulating compounds to calming ones in the matcha itself.
This means eating a matcha cookie is unlikely to give you the same buzzy, anxious feeling as drinking a cup of coffee with the same amount of caffeine. The effect is gentler and more gradual, which is one reason matcha has become popular in baked goods.
Comparing Matcha Cookies to Other Caffeine Sources
- Matcha cookie (light recipe): 5 to 35 mg per cookie
- Matcha cookie (heavy recipe): 40 to 70 mg per cookie
- Cup of brewed green tea (8 oz): 25 to 50 mg
- Shot of espresso: about 63 mg
- Cup of brewed coffee (8 oz): 80 to 100 mg
- Dark chocolate (1 oz): about 12 mg
One or two matcha cookies are unlikely to keep most adults awake at night, especially if eaten earlier in the day. But three or four cookies from a matcha-heavy recipe could deliver 200 mg or more of caffeine, which is enough to notice. If you’re pregnant, nursing, or avoiding caffeine for medical reasons, treat matcha cookies the same way you’d treat any caffeinated food: check the ingredients and portion size before assuming they’re caffeine-free.