Unsweetened Cocoa Powder with Butter (Best Option)
1 tablespoon cocoa powder + 1 tablespoon butter per 1 ounce dark chocolateUnsweetened cocoa powder provides the concentrated chocolate flavor without added sugar, while butter supplies the necessary fat to mimic the texture dark chocolate imparts. This combination ensures the doughnut batter remains moist and tender.
To succeed, melt the butter and mix thoroughly with the cocoa powder before incorporating into the doughnut batter to avoid clumping. Adjust sugar slightly if needed since cocoa powder is unsweetened.
The final doughnuts will have a slightly less intense chocolate flavor but maintain the rich texture and moisture similar to using dark chocolate.