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Tristan Combrink
By Tristan Combrink

Peanut Butter Cookie in a Mug

5 steps
Prep:5minCook:1min
Updated at: Wed, 30 Sep 2026 03:26:14 GMT

Nutrition balance score

Unbalanced
Glycemic Index
65
Moderate
Glycemic Load
29
High

Nutrition per serving

Calories424.3 kcal (21%)
Total Fat23.4 g (33%)
Carbs44.9 g (17%)
Sugars24.6 g (27%)
Protein8.5 g (17%)
Sodium313.1 mg (16%)
Fiber1.4 g (5%)
% Daily Values based on a 2,000 calorie diet

Instructions

Step 1
Add your peanut butter and butter to a mug and melt in the microwave.
Step 2
Add your sugar and salt to your melted peanut butter and butter and mix until well combined.
Step 3
Once your peanut butter batter is cool enough, add your egg yolk and vanilla and mix until well combined.
Step 4
Now add half of your flour and gently mix until combined. Add the other half of your flour and any add-ins you want (chocolate chips, cinnamon, ect), and gently mix until just combined.
Step 5
Microwave on high for 40 seconds up to 1 minute in 5 second intervals until done. It should look set but slightly moist on top still. Let it cool for a few minutes and enjoy.

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