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melted butter all-purpose flour sugar baking powder salt strawberries milk vanilla extract
In a 12-ounce (375 ml) mug or larger, melt the butter in the microwave for a few seconds. Once melted swirl it to coat the sides of the mug. Leave the remaining butter and add the flour, sugar, baking powder, diced strawberries, and milk. Mix until just combined.
Microwave on high for 90 seconds to 2 minutes. This will depend on the size of your mug and your microwave. Be careful not to over-microwave. The top will be just set.