Boston Brown Bread Recipe America’s Test Kitchen: Molasses-Kissed Loaf With Old-Fashioned Flavor

There’s a timeless charm to a loaf of Boston brown bread, with its deep molasses sweetness and hearty texture. This version stays true to the old-fashioned flavor while simplifying the process for home cooks.

The secret lies in the balance of ingredients—cornmeal, whole wheat flour, and raisins soak up the molasses and buttermilk for a moist, dense crumb. America’s Test Kitchen refined the method to ensure consistent results every time.

Steaming the batter in a loaf pan keeps it tender and rich, with a slightly sticky crust that’s characteristic of this New England classic. The aroma alone is enough to transport you to a cozy kitchen.

Serve it warm with butter or alongside baked beans for a taste of tradition. The recipe delivers on nostalgia without the fuss.

Ingredients for Boston Brown Bread Recipe America’s Test Kitchen

A handful of pantry staples creates this molasses-kissed loaf with old-fashioned charm and hearty texture.

The molasses is non-negotiable here—Brer Rabbit unsulphured is what America’s Test Kitchen recommends for that deep, clean sweetness. Stone-ground cornmeal (try Bob’s Red Mill) gives the right gritty texture, while the whole wheat flour adds density. Raisins should be plump—soak them in warm water for 10 minutes if they’re dry (trust me on this). Buttermilk ties it all together, so don’t skip the full-fat version.

No buttermilk? Whole milk plus 1 tbsp lemon juice works in a pinch. Out of whole wheat flour? All-purpose at a 1:1 ratio keeps it close. Want more spice? Add a pinch of cloves or nutmeg. The raisins can be swapped for dried currants if you prefer a less sweet bite. Molasses substitutes (like honey) won’t give the same depth, so stick with the original.

The batter can rest overnight in the fridge—actually improves the flavor. Baked loaf keeps 4-5 days wrapped at room temp, or freeze slices for up to 3 months. Always steam in a well-greased loaf pan for that classic sticky crust.

Step-by-Step Instructions for Boston Brown Bread

Here’s the method. Straightforward, tested, works every time.

Step 1: Combine Dry Ingredients and Prepare Raisins

In a large mixing bowl, whisk together the 1 cup Cornmeal, 1 cup Whole Wheat Flour, and 0.5 cup All-Purpose Flour. This combination ensures the right texture—heartier than regular bread but still tender. Add the 1 tsp Baking Soda, 0.5 tsp Salt, 0.5 tsp Ground Cinnamon, and 0.25 tsp Ground Ginger, whisking until evenly distributed.

Meanwhile, place the 0.75 cup Raisins in a small bowl and cover with warm water to plump for 10 minutes. This prevents them from sinking to the bottom of the loaf and ensures they stay moist during baking. Drain them thoroughly before adding to the batter.

Step 2: Mix Wet Ingredients for the Batter

In a separate bowl, combine the 0.75 cup Molasses and 1.25 cups Buttermilk. The molasses will be thick and sticky, so whisk vigorously to fully incorporate it into the buttermilk. This mixture should be smooth and uniform in color, with no streaks of molasses remaining.

Pour the molasses-buttermilk mixture into the dry ingredients. Stir with a wooden spoon just until the batter comes together—it will be thick and slightly lumpy. Overmixing can make the bread dense, so stop as soon as the last bits of flour disappear.

Step 3: Fold in Raisins and Prepare the Baking Pan

Drain the raisins completely and pat them dry with a paper towel to remove excess moisture. Fold them gently into the batter using a spatula, making sure they’re evenly distributed throughout. The batter will be thick enough to hold the raisins in suspension.

Grease a 9×5-inch loaf pan with 1 tbsp Unsalted Butter, ensuring all surfaces are coated. This prevents sticking and helps the bread release cleanly after baking. Pour the batter into the prepared pan, smoothing the top with the spatula.

Step 4: Bake to Perfection

Preheat your oven to 350°F. Bake the bread for 50-60 minutes, or until a toothpick inserted into the center comes out clean. The top should be deep golden brown and firm to the touch, with a slight domed shape.

If the top begins to darken too quickly, tent the pan loosely with aluminum foil to prevent over-browning. The bread is done when it pulls slightly away from the sides of the pan and the center springs back when pressed lightly.

Step 5: Cool and Serve

Remove the bread from the oven and let it cool in the pan for 10 minutes. This allows it to set up slightly before transferring to a wire rack. Run a butter knife around the edges to loosen if needed, then turn the loaf out onto the rack.

Let the bread cool for at least 1 hour before slicing. This waiting period ensures the crumb sets properly and the flavors meld. Serve slices warm with the remaining 1 tbsp Unsalted Butter for a traditional touch. The bread should be moist, slightly dense, and rich with molasses flavor.

Make-Ahead Tips for This boston brown bread recipe americas test kitchen

Batter Prep Ahead

Mix your dry ingredients and plump the raisins the night before. Store the dry mix in an airtight container at room temperature. The raisins can stay in the fridge covered in water for up to 24 hours—just drain before using. This cuts morning prep to 5 minutes. 💡

Assemble and Refrigerate

Combine wet and dry ingredients, fold in raisins, then cover the bowl tightly with plastic wrap. Refrigerate the batter for up to 12 hours. I find the flavors deepen beautifully with this resting time.

Cold Batter Baking

When ready to bake, let the batter sit at room temperature for 30 minutes while preheating the oven. Pour into your greased pan and bake as directed. The cold start won’t affect the final texture.

Freeze for Later

Bake the loaf completely, cool, then wrap tightly in plastic wrap and again in aluminum foil. Freeze for up to 3 months. Thaw overnight at room temperature before serving. ❄️

Slice and Store

For quick breakfasts, slice the cooled loaf and freeze individual pieces. Toast straight from frozen at 350°F for 5-7 minutes. Each slice stays fresh this way for up to 1 month.

Revive Stale Bread

If your loaf dries out, wrap it in damp paper towels and microwave for 15-20 seconds. The steam restores moisture beautifully. Works like magic every time.

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