Low Histamine Cinnamon-Cardamom Apple Crumble Bars
Warm spiced apple filling tucked between a golden oat crust and a buttery crumble topping — these bars are the kind of bake that makes the whole kitchen smell like a cozy autumn afternoon. For anyone managing histamine sensitivity, desserts can feel like a minefield of fermented, aged, or processed ingredients, but every component here is straightforward and fresh. The filling is simply diced apples cooked down with brown sugar, Ceylon cinnamon, and cardamom, then thickened with tapioca starch for that glossy, jammy texture that holds together beautifully when you slice. Ceylon cinnamon is a deliberate choice over cassia varieties, and the rice flour and tapioca starch base keeps the crust tender and gluten-free without relying on any ingredient that tends to trigger reactions. Cold butter worked into the oat-and-flour mixture creates those irresistible clumpy crumbs that bake up crisp on top while staying a little soft underneath. The recipe makes 16 bars, so it's genuinely great for meal prepping a week's worth of safe snacks or bringing something impressive to share without having to explain a complicated substitution list. Let them cool fully before cutting and you'll get clean, picture-perfect squares every single time.
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Learn more →Ingredients
16 servings
For the crust and crumble
- 1 ½ cups rolled oats
- 1 cup rice flour
- ½ cup tapioca starch
- ¾ cup packed light brown sugar
- 1 tsp ground ceylon cinnamon
Ingredient noteSome low histamine plans avoid cinnamon, but cinnamon doesn't actually contain histamine. This recipe uses only a very small amount of true ceylon cinnamon per serving. If you prefer to always avoid true ceylon cinnamon, please tap it and change its rating to Red.
- ½ tsp ground cardamom
- ¼ tsp fine salt
- ¾ cup unsalted butter, cold and cut into ½-inch cubes
For the apple filling
- 3 medium apples (about 1 ½ lb), peeled, cored, and cut into ½-inch dice
- 3 tbsp light brown sugar
- 1 tsp ground ceylon cinnamonIngredient note
Some low histamine plans avoid cinnamon, but cinnamon doesn't actually contain histamine. This recipe uses only a very small amount of true ceylon cinnamon per serving. If you prefer to always avoid true ceylon cinnamon, please tap it and change its rating to Red.
- ¼ tsp ground cardamom
- 2 tbsp tapioca starch
- 1 tbsp unsalted butter
Instructions
- 1
Preheat the oven to 350°F (175°C). Line a 9×9-inch baking pan with parchment paper, leaving a 2-inch overhang on two opposite sides to use as handles for lifting the bars out later.
- 2
In a large mixing bowl, whisk together the rolled oats, rice flour, tapioca starch, 3/4 cup brown sugar, 1 tsp Ceylon cinnamon, 1/2 tsp cardamom, and salt until evenly combined. Add the cold butter cubes and work them in with a pastry cutter or your fingertips until the mixture resembles coarse, clumpy crumbs with some pea-sized pieces of butter remaining — do not overwork into a smooth dough.
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