The minute I spotted this recipe I knew I wanted to try it. Fresh thyme in a sweet muffin? It sounded so interesting. Plus some fresh blackberries, which are available in our markets almost year ‘round now. And lemon – we have an abundance of them on our trees, although in this case it was only the zest that was needed. The recipe is in the most recent issue (March, 2012) of Bon Appetit.
Since I love to bake, it was a no-brainer to try this – read the recipe through first (something I often forget to do) – and begin. The crumble topping (cake flour, butter, fresh thyme baking powder, sugar and an egg yolk) is made first and chilled (even a day ahead is okay). The muffin batter has several steps – and in fact this particular batter requires lots of stand-mixer time – 2 minutes of just butter, 2-3 minutes once you add sugar, another 3-4 minutes once you add the eggs and vanilla. Then everything slows down – you add the buttermilk, then the dry ingredients. What it made was a really, really light batter
Meanwhile, the blackberries are halved – that’s not something I’ve ever done before I must admit – and you actually want some of the berries to macerate a bit in the batter to give it some dark berry color. The berries are just folded in, then plopped into lined muffin cups. The recipe indicated using those fancy paper liners – the tall, waxed paper type that makes a very large muffin. I just used regular muffin liners and my regular muffin tin. The chilled crumble is sprinkled on top (about a tablespoon per muffin) and into a 325° oven they went for 40 minutes. I ended up with quite a bit of topping leftover – I suppose I should have made 18 muffins, or even 20 of them so I used up all of the crumble. Don’t know exactly what I’m going to do with the rest of it. It’s too nice to throw out . . . any ideas for me, kind readers?
Since I now have a Thermapen Instant Read Thermometer (wow, is that thing a real beauty – expensive – but it does register temp within about 3 seconds) I use it at any and all occasions. I quickly looked up online what temp the interior is supposed to be of a baked sweet muffin – it said 210°, and at 40 minutes that’s exactly what they were. They cooled in the tin for about 10 minutes, then I took them out and onto a rack while I baked the remaining 4 muffins (the recipe makes 16).
My DH has just planted a new herb garden for me – in two deep and long raised flowerboxes that sit outside on a short wall in our patio, and we have new, tender thyme in one. I chopped up two teaspoons of it (one went in the crumble topping, the other in the muffin batter itself – next time I’d add more).
What I liked: well, I liked the thyme. A lot and I’ve upped the amount in the batter by half (from 1 tsp to 1 1/2 tsp). Loved the blackberries. I’d also add just a bit more sugar. Maybe because an insufficient amount of the topping ended up on top (where there was some sugar) the muffins were just a bit too savory. I’d have to try them again to know for sure. I’ve increased the sugar in the recipe below or serve with a sweetened butter. I liked the silky cake-like texture (from the cake flour and all the long mixing). I also liked that each muffin had just 11 grams of fat! Surprising, when there was a cube of butter in the batter and 3/4 of one in the crumble.
What I didn’t like: really nothing – all the flavors were delish, and the cake so very tender. I might add some toasted walnuts? More vanilla?
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Blackberry, Lemon and Thyme Muffins
Recipe By: Adapted from Bon Appetit, March 2012
Serving Size: 16
NOTES: Can be made 1 day ahead. Store cooled muffins airtight at room temperature for up to 2 days. If storing longer, freeze, individually wrapped in foil and in a sealed plastic bag.
CRUMBLE:
1 cup cake flour
1/4 cup sugar
1 1/2 teaspoons chopped fresh thyme
1/2 teaspoon baking powder
1/2 teaspoon kosher salt
6 tablespoons unsalted butter — (3/4 stick) chilled, cut into 1/4″ cubes
1 large egg yolk
MUFFINS:
1 cup all-purpose flour — plus 2 tablespoons (for blackberries)
1 cup cake flour
1 teaspoon baking powder
3/4 teaspoon baking soda
1 teaspoon kosher salt
1/2 cup unsalted butter — 1 stick, room temperature
1 1/4 cups sugar
2 large eggs
1 teaspoon vanilla extract
1 cup buttermilk
2 tablespoons lemon zest — finely grated
1 1/2 cups blackberries — fresh, about 6 ounces, or frozen, thawed, drained, halved lengthwise
1 1/2 teaspoons chopped fresh thyme
1. CRUMBLE: Whisk first 5 ingredients in a medium bowl. Add butter. Using your fingertips, rub in butter until pea-size lumps form. Add egg yolk; stir to evenly distribute and form moist clumps. (Crumble should resemble a mixture of pebbles and sand.) Chill for at least 1 hour. DO AHEAD: Can be made 3 days ahead. Cover and keep chilled.
2. MUFFINS: Preheat oven to 325°F. If making standard-size muffins, line 16 1/3-cup molds with paper liners.
3. Whisk 1 cup all-purpose flour and next 4 ingredients in a medium bowl.
4. Using an electric mixer, beat butter until pale and creamy, about 2 minutes. Add sugar and continue to beat until well incorporated, 2-3 minutes longer.
5. Whisk eggs and vanilla in a small bowl to blend; gradually beat into butter mixture. Continue beating until light and fluffy, 3-4 minutes. Combine buttermilk and lemon zest in a small bowl; gradually beat into butter mixture. Add dry ingredients; beat just to blend (do not overmix).
6. Toss blackberries and thyme with 2 tablespoons flour in another small bowl; fold into batter, gently crushing berries slightly to release some juices.
7. Spoon about 2/3 cup batter into large paper muffin molds, or divide between prepared muffin pans. Top each large muffin with 2 tablespoons crumble or each small muffin with 1 rounded tablespoon crumble.
8. Bake until tops are golden brown and a tester comes out clean when inserted into center (or to an internal temperature of 210°), about 50 minutes for large muffins and 40 minutes for standard-size muffins. Let cool in pan at least 20 minutes, then transfer muffins to a wire rack to cool. Serve warm or at room temperature.
Per Serving: 267 Calories; 11g Fat (38.0% calories from fat); 4g Protein; 38g Carbohydrate; 1g Dietary Fiber; 67mg Cholesterol; 308mg Sodium.

hddonna
said on March 10th, 2012:
These look delicious! One suggestion for using up your extra crumbs would be to make a little fruit crisp. If you have extra berries you could use those, otherwise pears, apples, whatever. I’d add a smidgen of sugar and a teaspoon or two of flour to the fruit if it was juicy, plus any suitable spice if desired, then put in a ramekin, and topping, and bake–maybe include a few nuts. Apricots with almonds would be yummy. I usually go for fruit crisps with oatmeal in them, but I think it would be delicious with this sort of crumble topping, too. I’ve actually made extra topping on purpose when making apple crisp and found that I could make little apple crisps in ramekins on demand. I baked the topping on a cookie sheet and stored the crumbs in an airtight container. Since it was already baked, I could cook little apple crisps in ramekins in the microwave in no time at all, and the texture was perfect.
Those are all such great suggestions, Donna! Thank you. But, I gave the crumbs to one of the ladies who came to my home the next day (I baked them for a game day at my house) who thought she’d try making these. So the crumbs are gone! . . . carolyn t
Toffeeapple
said on March 10th, 2012:
Perhaps you could use the left over crumble to top some Rhubarb before you roast it??
An interesting recipe but, as I rarely bake, I shall never taste them.
Thanks for the idea – but I gave the crumbs to a friend – I’d made them for my Scrabble group that was meeting at my house – my friend just LOVED the muffins and wanted to make them – so I gave it all to her. . . carolyn t