Ingredients
Method
Preparation
- Preheat the oven to 350°F (175°C). Line a 12-cup muffin tin with paper liners or grease lightly.
- In a large bowl, beat the softened butter and sugar together until light and fluffy, about 2–3 minutes with an electric mixer.
- Add the eggs one at a time, beating briefly after each. Stir in the vanilla until combined.
- In another bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, and cardamom.
- Add the dry mixture to the wet in three additions, alternating with the milk: dry, milk, dry, milk, finish with dry. Mix gently—stop as soon as the batter is uniform.
- Fold the blackberries into the batter with a rubber spatula, being gentle to keep the berries intact.
- Spoon the batter into the prepared muffin cups, filling about 3/4 full.
- For the crumble: combine 3 tablespoons cold butter, 3 tablespoons flour, and 2 tablespoons sugar with a pinch each of cinnamon and cardamom; rub together until coarse crumbs form and sprinkle over each muffin.
Baking
- Bake 18–20 minutes, or until the tops are golden and a toothpick inserted in the center comes out clean.
- Cool for 5 minutes in the tin, then transfer to a wire rack.
Notes
If you prefer less sweetness, reduce sugar to 3/4 cup. For bigger muffins, use a jumbo tin and add 5–7 minutes to baking time. Store cooled muffins in an airtight container for up to 2 days; refrigeration up to 5 days may dry them slightly.
