In Mills' cookbook Deliciously Ella: The Plant-Based Cookbook, the brownies are touted as her "all-time favorite" and "probably the most popular sweet recipe we've ever had at the deli!" (She owns and runs a cafe in London's Mayfair.) They come together from ingredients that might otherwise be hiding in a yogurt bowl—looking at you, chia seeds and walnuts—or a hearty, gluten-free loaf (buckwheat flour, almond milk, coconut oil).
But together, and coupled with cacao powder and coconut sugar, they make for an improbably fudgy, chocolatey sheet of brownies, deserving of Mills' exclamation point.
“Serve these warm with coconut ice cream. It’s heaven,” she says.
While Mills doesn’t recommend making substitutions off the cuff when baking, she notes that with this recipe, the coconut sugar can be swapped for brown sugar, and the buckwheat flour could be traded for all-purpose (gluten-free or otherwise).
“It’s honestly the most delicious brownie,” she says. “And no one will think it’s vegan, either.”
Ella Quittner is a a writer at Food52. She covers food, travel, wellness, lifestyle, home, novelty snacks, and internet-famous sandwiches. You can follow her on Instagram @equittner, or Twitter at @ellaquittner.