America's Test Kitchen Boston Baked Beans Recipe: Molasses-Kissed Depth With Perfectly Crispy Top

America's Test Kitchen Boston baked beans recipe delivers the molasses-kissed depth and perfectly crispy top that make this dish legendary. After years of testing, we’ve perfected the balance of sweetness, smokiness, and tender beans—no shortcuts, just time-honored technique.

The secret lies in slow-baking with salt pork, which infuses the beans with rich, savory flavor while keeping them tender.

This recipe stays true to tradition while making it approachable for home cooks. You’ll start with navy beans soaked overnight, then simmer them with salt pork, onions, and a spiced sauce thickened with tomato paste.

The molasses adds depth, while a crispy top forms as it bakes for hours—transforming simple ingredients into a dish that tastes like a New England holiday table.

What you’ll achieve is a crispy, caramelized crust that cracks like glass, giving way to tender beans swimming in a glossy, slightly tangy sauce. The salt pork adds a smoky richness that cuts through the sweetness, creating layers of flavor that linger.

Serve alongside cornbread or roasted meats for a meal that feels like a celebration.

For those short on time, we’ve included a 3-hour shortcut using canned beans, but the overnight-soaked version delivers the best texture and depth. Whether you’re hosting a gathering or simply craving comfort food, this recipe delivers restaurant-quality results with minimal effort. Let’s get baking!

Ingredients for america's test kitchen boston baked beans

Sixteen ingredients transform into a dish that captures New England tradition with crispy perfection.

The navy beans are the foundation, so choose high-quality dried beans from a reputable source like Penzeys Spices or your local bulk food store. The salt pork—whether you opt for traditional salt pork or bacon—must be diced into small, even pieces for even cooking. Costco often carries large packs of salt pork at a reasonable price, while bacon from Applegate or Oscar Mayer provides a reliable shortcut. For the molasses, unsulphured varieties like Grandma’s Molasses deliver the richest depth, though Goya unsulphured is a budget-friendly alternative. The tomato paste should be canned, not the tube variety, as it provides a more concentrated flavor. Freshly cracked pepper and ground spices like cloves and allspice elevate the dish, so toast your whole spices briefly in a dry pan before grinding for enhanced aroma.

No salt pork? Smoked bacon or even thick-cut ham can substitute, though the flavor profile will shift slightly. Running short on molasses? Maple syrup at half the quantity works in a pinch, though it lacks the deep caramel notes. For a vegetarian option, swap the salt pork for smoked paprika and liquid smoke, though the traditional smoky richness will be diminished. The tomato paste can be replaced with tomato sauce at double the volume, though it may dilute the sauce’s intensity. If you’re using canned beans for the shortcut version, drain and rinse them thoroughly to remove excess sodium. For the mustard, Dijon provides a sharper bite, while whole grain adds texture—both work well, but Dijon is the classic choice.

The beans require overnight soaking, so plan ahead—use a large bowl and plenty of water to prevent them from absorbing too much. Store the soaked beans in their liquid in the fridge until ready to use. The salt pork and onions can be prepped a day ahead and refrigerated. The sauce components—molasses, tomato paste, spices, and vinegar—keep well in the pantry for months, so assemble them just before baking. Once baked, the beans reheat beautifully—cover with foil and warm in a 350°F oven for 20-30 minutes. For the crispy top, use cold butter and sprinkle it over the beans just before the final 15 minutes of baking. Leftovers keep for 5 days in the fridge or 3 months frozen, though the crispy top softens upon reheating.

Step-by-step instructions for molasses-kissed Boston baked beans

This method delivers restaurant-quality texture and flavor with a signature crispy top.

Rinse the 2 cups of navy beans under cold water until the liquid runs clear. Soak them in a large bowl with 6 cups of water for at least 8 hours or overnight. This overnight soak ensures even cooking and prevents tough beans. Drain and rinse again before using.

While the beans soak, dice the 8 oz of salt pork into ¼-inch pieces, leaving the skin on if preferred. The skin adds rich flavor as it renders during cooking. Spread the diced salt pork on a wire rack and refrigerate uncovered for 1 hour to dry slightly—this promotes better browning when cooked.

In a 6-quart Dutch oven, combine the drained navy beans, chopped 1 whole yellow onion, 0.25 cup of tomato paste, 0.5 cup of molasses, 0.5 cup of brown sugar, 1 tablespoon of mustard, 1 tablespoon of apple cider vinegar, 1 tablespoon of kosher salt, 0.5 teaspoon of ground black pepper, 0.5 teaspoon of ground cloves, and 0.5 teaspoon of ground allspice. Stir well to distribute all ingredients evenly.

Add the diced salt pork to the Dutch oven and pour in enough water to cover the beans by 1 inch. Bring to a simmer over medium-high heat, then reduce to low. Partially cover the pot and simmer gently for 2 hours, stirring occasionally. This slow cook ensures the beans soften completely while developing deep flavor.

After 2 hours, remove the lid completely and increase heat to medium. Let the beans cook uncovered for 30-45 minutes, stirring occasionally. You're aiming for a thick, syrupy consistency where the beans are just coated in sauce. The liquid should reduce significantly, leaving a glossy surface.

When the beans reach this stage, spread them evenly in the Dutch oven. Dot the top with the 2 tablespoons of cold unsalted butter. Place the pot under a preheated broiler for 3-5 minutes, watching closely. The top should develop a deep golden-brown crust with caramelized edges—this is your crispy finish. Rotate the pot if needed for even browning.

Remove from the broiler and let the beans rest for 10 minutes before serving. This resting period allows the flavors to meld and the crispy top to set. The beans should be fork-tender with a glossy, molasses-rich sauce clinging to each bean.

Serve immediately with the crispy top intact. The contrast between the tender beans and crispy surface creates the signature Boston baked bean experience. For best results, serve with cornbread or crusty bread to soak up the rich sauce.

Make-ahead tips for this dish

Overnight Prep

Start your beans soaking the night before—this is non-negotiable for the best texture. I use a large glass bowl (like Pyrex) to hold 2 cups navy beans in 6 cups water overnight. The longer they soak, the more tender they become.

Pro tip: Add 1 tsp baking soda to the soaking water to help break down tough bean skins. Drain and rinse thoroughly before using. 💫

Salt Pork Prep

While beans soak, dice 8 oz salt pork into ¼-inch cubes—smaller pieces render faster. I refrigerate them uncovered on a wire rack for 1 hour to dry slightly before cooking. This step is crucial for achieving that perfect crispy crust later.

For extra flavor, toast the diced pork in a dry skillet over medium heat for 2-3 minutes until golden before adding to the beans.

Sauce Assembly

Mix all sauce ingredients—molasses, tomato paste, brown sugar, mustard, vinegar, and spices—in a small bowl before adding to the beans. This ensures even distribution of flavors.

I recommend using unsulphured molasses (like Grandma's) for the deepest flavor. For a smoother sauce, blend the mixture briefly before adding to the beans. 🍯

Slow Cooker Shortcut

If you're short on time, use a 6-quart slow cooker on low for 6-7 hours instead of the Dutch oven method. Add all ingredients as directed, but reduce the tomato paste to 2 tbsp since slow cooking intensifies flavors naturally.

The beans will still develop that signature tender texture without the crispy top—just add cold butter and broil for 3-5 minutes at the end for that restaurant-quality finish.

Freezer Storage

These beans freeze beautifully for up to 3 months. Let them cool completely, then transfer to airtight containers or freezer bags, leaving 1 inch headspace for expansion. When reheating, thaw overnight in the fridge, then warm in a 350°F oven covered with foil for 30-40 minutes.

The crispy top will soften, but the beans will still taste rich and flavorful. 🧊

Reheating Leftovers

For fridge leftovers, cover the beans with foil and reheat in a 350°F oven for 20-30 minutes until warmed through. To restore the crispy top, broil for 2-3 minutes at the end.

For stovetop reheating, add ¼ cup water or broth to prevent drying, then simmer covered for 10 minutes. Always taste and adjust seasoning—leftovers often need a pinch more salt or a splash of vinegar to brighten flavors.

Frequently asked questions