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Export 6 ingredients for grocery delivery
Step 1
Whisk milk, vegetable oil, and sugar together in a 12 oz. or large mug.
Step 2
Whisk in the flour until smooth.
Step 3
Whisk in the oatmeal, baking powder, and salt until full incorporated.
Step 4
Spoon 2 tablespoons of peanut butter on top and push slightly into the batter.
Step 5
Microwave on HIGH for 30 seconds, and then in 15-second bursts until the top looks dry and cooked and springs back when pressed with a finger. Mine took about 90 seconds to cook.
Step 6
Top with the remaining tablespoon of peanut butter and let stand at least 5 minutes before eating.