Lemon Zucchini Protein Muffins

Good news: we’re reworking our lemon zucchini protein muffins with a new vegan recipe.

More good news: we’re giving away our old recipe!

These muffins pack in a whole lot of nutritional value with low sugar to boot. They’re not too sweet, with the blueberries adding a tart punch and lemon brightening everything up. They make a great breakfast, post workout snack, or midday pick me up treat.

Why zucchini belongs in a muffin

If you’ve never baked with zucchini, trust me on this one. Shredded zucchini all but disappears into the crumb — you won’t taste it — but it does something no amount of extra butter can: it keeps these muffins genuinely moist for days. It’s mostly water and fiber, so you get tenderness and a little nutrition without piling on sugar or fat. The trick is not to wring it out. For muffins this lean on sugar, you want that moisture, so shred it fresh and fold it straight in. Topping the muffins with the second half of the zucchini gives you those pretty green flecks on top and a touch more moisture right at the surface.

About that flour blend

Gluten-free baking lives and dies on the flour blend, and this one is built on purpose — not just a bag of pre-mixed “1-to-1” flour. Almond flour brings fat, protein, and a soft, moist crumb. Oat flour adds structure and a gentle, wholesome flavor. Potato starch and tapioca flour are the lighteners — they keep the muffins from turning dense and give you that tender, springy bite. And the xanthan gum is doing the job gluten normally would: holding everything together so the muffins rise tall instead of crumbling apart. If you’re new to GF baking, this is a blend worth understanding, because the same logic carries across almost everything you’ll bake.

Get the most out of your lemon

The brightness here comes from zest, not juice. The zest is where the fragrant oils live — the juice mostly just adds acidity and water. For an even bigger lemon punch, rub the zest into your sweetener with your fingertips before you start; it releases those oils and perfumes the whole batch. Always zest before you juice, and only take the yellow — the white pith underneath is bitter.

A few notes for the best batch

• Don’t overmix once the flour is in. Mix to combine and stop — overworking the batter makes muffins tough and can knock the air out of your rise.
• Toss the blueberries in a little of the flour before folding them in and they’re less likely to sink to the bottom.
• Erythritol keeps these low in sugar, but it doesn’t brown or caramelize the way sugar does, so don’t wait for a deep golden top — go by a toothpick coming out clean.
• Store them in an airtight container; thanks to the zucchini they stay moist for 3–4 days on the counter, or freeze them and reheat for a quick breakfast.

And keep an eye out — a fully vegan version of these is in the works in my kitchen. This is the original I’m happy to hand over in the meantime.