Homemade Oatmeal Cranberry Bars Recipe

Layers of oats, fresh cranberries and a delicious crumb topping make up these Oatmeal Cranberry Bars. They’re perfect for the holiday season and easy to make gluten free! Whip these up for a sweet Christmas breakfast or a cozy winter snack.

Inspired by a classic blueberry oat bar, these cranberry bars are an excellent way to use fresh cranberries while they’re in season. When cranberries are out of season, frozen cranberries work beautifully with no changes to the recipe.

These Oatmeal Cranberry Bars are strikingly beautiful as well as delicious—bright pops of cranberry against a buttery oat base make them a festive addition to any holiday table. They’re versatile too: serve them for breakfast with coffee, offer them as a mid-day snack, or plate them for dessert. They travel well for parties and are simple enough to make in batches for holiday hosting.

Ingredients

• For the cranberry oatmeal bars (base):
  • 3/4 cup all-purpose flour
  • 1 cup brown sugar
  • 2 cups rolled oats
  • 1/2 teaspoon baking powder
  • 1/2 teaspoon sea salt
  • 3/4 cup butter, cold and cubed
  • 3 cups cranberries (fresh or frozen)
• For the brown sugar crumble:
  • 2 tablespoons flour
  • 1/3 cup brown sugar
  • 1/2 teaspoon ground cinnamon
  • 2 tablespoons butter, cold

Instructions

1. Preheat the oven to 350°F (175°C).
2. Prepare a 9″ x 13″ baking dish by spraying with cooking spray or lining with parchment paper for easy removal.
3. In a large bowl, combine 3/4 cup flour, 1 cup brown sugar, 2 cups rolled oats, 1/2 teaspoon baking powder and 1/2 teaspoon sea salt.
4. Add 3/4 cup cold, cubed butter to the dry mixture and use your hands or a pastry cutter to blend until you have a crumbly texture.
5. Press about two-thirds of the crumb mixture evenly into the prepared pan to form the oatmeal base.
6. Spread 3 cups of cranberries evenly over the base. If using frozen cranberries, there’s no need to thaw them first.
7. In a small bowl, mix 2 tablespoons flour, 1/3 cup brown sugar and 1/2 teaspoon ground cinnamon for the crumble topping. Cut in 2 tablespoons cold butter until a coarse crumble forms.
8. Sprinkle the crumble evenly over the cranberries, then finish with the remaining oat crumb if any.
9. Bake for 45–50 minutes, or until cranberries begin to burst and the crumble turns golden brown.
10. Remove from oven and allow to cool at least 30 minutes before attempting to slice. For clean, uniform bars wait 60 minutes so the filling sets fully.

How to make them gluten free

To make these bars gluten free, replace the all-purpose flour with a 1:1 gluten-free flour blend and be sure to use certified gluten-free rolled oats. The texture and flavor remain just as satisfying when made with these substitutions.

Should I refrigerate uneaten bars?

You don’t have to refrigerate the bars immediately, but refrigeration will extend their freshness. Stored in an airtight container in the refrigerator, they keep well for 5–7 days. At room temperature in an airtight container, expect 1–2 days of freshness.

If you prefer them warm, reheat individual bars in the microwave for about 20–30 seconds or warm a few minutes in a low oven until heated through.

More cranberry recipes

If you enjoy these Oatmeal Cranberry Bars, try other cranberry-forward recipes such as:

• Cranberry Apple Sangria
• Goat Cheese Ball with Cranberries & Rosemary
• Maple Cranberry Walnut Monkey Bread
• Cranberry Pomegranate Waffles
• Cranberry Brie Ham Sliders
• Cranberry Pear French Toast Bake

Nutrition Facts

Approximate nutrition per serving (one bar):

• Calories: 299 kcal
• Carbohydrates: 43 g
• Protein: 3 g
• Fat: 13 g (Saturated fat: 8 g)
• Cholesterol: 33 mg
• Sodium: 215 mg
• Fiber: 3 g
• Sugar: 25 g
• Vitamin A, Vitamin C, Calcium and Iron present in small amounts

Baking tips & variations

• Line the pan with parchment overhanging the edges to lift the entire slab out for easier slicing.
• Use frozen cranberries straight from the bag for convenience; they bake and release juice similarly to fresh berries.
• For a citrus note, fold a teaspoon of orange zest into the cranberry layer, or add chopped nuts to the crumble for extra texture.
• Make ahead and freeze: cut bars, wrap individually, and freeze for up to 2 months. Thaw overnight in the fridge and reheat briefly if desired.

These bars are a crowd-pleasing, easy-to-make treat that bring bright, tart flavor to buttery oats and a crackly crumb. They’re ideal for holiday breakfasts, potlucks or a comforting weekend bake.