Fluffy, bakery-style muffins made with King Arthur GF Measure for Measure flour and Greek yogurt. The yogurt is the secret — it keeps them moist for days and adds just enough tang to balance the chocolate.
The original recipe calls for regular all-purpose flour — I swapped it 1:1 with King Arthur Gluten-Free Measure for Measure and got almost identical results. That's rare. Most flour swaps require adjusting ratios or adding binders. King Arthur just works.
The Greek yogurt is doing a lot here: it adds fat and protein for structure, moisture for a soft crumb, and just enough acidity to react with the baking soda and help them rise. Don't skip it, and don't substitute with sour cream (though it's close).
Preheat your oven to 375°F (190°C). Line a standard 12-cup muffin tin with paper liners or grease well with butter or non-stick spray. Set aside.
In a large bowl, whisk together the King Arthur GF Measure for Measure flour, sugar, baking powder, baking soda, and salt. Make sure everything is evenly distributed — no pockets of baking soda.
In a separate medium bowl, whisk together the eggs, Greek yogurt, melted butter, and vanilla extract until smooth and well combined. The mixture will be thick — that's correct.
Pour the wet ingredients into the dry and fold gently with a rubber spatula until just combined. A few streaks of flour are fine. Do not overmix — this is the most important step for keeping them fluffy.
Reserve a small handful of chocolate chips to press onto the tops. Gently fold the rest into the batter.
Divide the batter evenly among the 12 muffin cups, filling each about ¾ full. Press the reserved chips onto the tops. Let the batter rest in the tin for 5 minutes before baking — this helps the GF flour hydrate and improves the rise.
Bake at 375°F for 18–22 minutes, until the tops are golden and a toothpick inserted in the center comes out clean (a melted chip doesn't count). They should feel set — not wobbly — when you gently press the center.
Let cool in the tin for 5 minutes before transferring to a wire rack. Eat one warm. Try to leave the rest for tomorrow — they're somehow even better the next day.
I tested this with Fage 0% and Chobani plain whole milk. The whole milk version wins easily — richer crumb, more moisture. If you're dairy-free, I haven't tested a yogurt substitute yet, but coconut yogurt is next on my list.
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