Looking for an easy gluten-free treat to make in minutes? Whip up this fluffy oatmeal cake in a mug with no flour required, only oats! Using my simple hack, stirring halfway through, means a light, fluffy, yet moist, texture every time! Oat mug cakes use simple ingredients, right in your kitchen, so you can enjoy this dessert (or breakfast) right now, in only 2 minutes!
Grease a 10 ounce microwave-safe mug or ramekin with nonstick cooking spray. Use a fork to whisk together egg, milk, maple syrup, oil, and vanilla extract.
1 large egg, 3 tablespoons milk, 2 tablespoons pure maple syrup, 1 tablespoon oil, ½ teaspoon vanilla extract
Using the fork, stir in the oats, baking powder, cinnamon, and salt. If using chocolate chips, do not add them yet.
½ cup quick-cooking oats, ½ teaspoon baking powder, ¼ teaspoon ground cinnamon, ⅛ teaspoon salt
Pour the batter into the prepared mug. Place in the microwave and cook for 45 seconds at full power. Remove and use a fork to stir the batter until uniformly mixed again. This helps the egg disperse, not settle to the bottom, and avoids rubbery results. If adding chocolate chips, add now and briefly stir to disperse.
½ tablespoon miniature chocolate chips
Return to the microwave and cook 45-60 seconds more. There will still be a little moisture at top, and that is fine. It will absorb as it sits for 1 minute before serving. Avoid over cooking for best texture.
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Notes
Sweetener Options
Using pure maple syrup yields the best results. Brown sugar or coconut sugar will also work, but may dry out texture. You may also reduce the amount of sweetener to 1 or 1½ tablespoon. I have not tried this recipe with a sugar-free substitute, but I see no reason why it wouldn't work as well.
Helpful Tips to Remember
Make sure you have at least a 10 ounce mug or ramekin to cook the cake in. Of course, it should be microwave-safe!
Stirring the cake halfway through cooking ensures the egg doesn't settle to the bottom and yields fluffier results.
If you would like to double the recipe and make 2 servings, use separate mugs and cook separately, not at the same time.
The oil may be replaced with an equal amount of creamy peanut butter, or any preferred nut butter. The cake will be slightly more dense, not quite as fluffy, but still delicious.
For leftovers, after it has cooled, wrap securely. For best results, rewarm slightly before enjoying again.