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Boston baked beans in slow cooker crockpot (1)

Crockpot Boston Baked Beans with Molasses

Amber Bondar
These Crockpot Boston Baked Beans are a slow-cooked, sweet, and savory side dish made from dry navy beans, molasses, brown sugar, and pantry staples. Simmered low and slow in the crockpot, they deliver old-school comfort and deep flavor without any canned shortcuts. Perfect for BBQs, potlucks, or chilly days when you need something hearty and homemade.
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Prep Time 10 minutes
Cook Time 8 hours
Total Time 8 hours 10 minutes
Course Side Dish
Cuisine American, Canadian
Servings 12
Calories 201 kcal

Equipment

  • Slow Cooker
  • measuring cup
  • Teaspoon
  • Cutting board
  • knife

Ingredients
  

  • 2¼ Cup Dry Navy Beans
  • 1½ Cup Onion Chopped
  • ½ Cup Ketchup
  • ⅓ Cup Molasses
  • ⅓ Cup Brown Sugar
  • 1 Tsp Dry Mustard Powder
  • 1 Tsp Salt
  • ¼ Tsp Black Pepper
  • 5 Cups Water

Instructions
 

  • Measure and add to the slow cooker the dried navy beans.
    2¼ Cup Dry Navy Beans
  • Peel and chop onion. Add to the beans in the slow cooker.
    1½ Cup Onion
  • Measure and add the ketchup, molasses, brown sugar, dry mustard, salt, and pepper.
    ½ Cup Ketchup, ⅓ Cup Molasses, ⅓ Cup Brown Sugar, 1 Tsp Dry Mustard Powder, 1 Tsp Salt, ¼ Tsp Black Pepper
  • Lastly add the water and then stir the mixture well.
    5 Cups Water
  • Cover with lid and set on low for 8-10 hours or high for 3-4 hours.
  • Stir the beans part way through cooking to blend flavors.
  • Turn off and serve right away.
  • Store unused portions in the fridge covered for up to four days.
  • Cool thoroughly and freeze unused portions for up to two months in airtight containers.

Notes

Amber’s Tips for Success

  • Always rinse and sort your dry beans before adding them to the crockpot.
  • Don’t worry if it looks watery at first—the sauce thickens beautifully by the end.
  • Avoid blackstrap molasses, which can make the beans too bitter.
  • Stir occasionally to help distribute flavors evenly.
  • Want a thicker sauce? Remove the lid for the last 30 minutes of cooking.
  • Freeze leftovers in portioned containers for easy meals later.
  • Add a splash of apple cider vinegar at the end for a touch of brightness.

Nutrition

Calories: 201kcalCarbohydrates: 41gProtein: 9gFat: 1gSaturated Fat: 0.1gPolyunsaturated Fat: 1gMonounsaturated Fat: 0.1gSodium: 152mgPotassium: 665mgFiber: 10gSugar: 17gVitamin A: 52IUVitamin C: 2mgCalcium: 91mgIron: 3mg
Keyword beans, crockpot, side dish, slow cooker
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