Low FODMAP Sour Cream Apple Streusel Snack Cake - FODMAP Everyday

Ingredients

• 3/4 cup (75 g) pecan halves (chopped)
• ¾ cup (160 g) firmly packed light brown sugar
• 3 tablespoons melted unsalted butter
• 2 tablespoons low FODMAP gluten-free all-purpose flour, (such as Bob’s Red Mill 1 to 1 Baking Flour)
• 1 ½ teaspoons cinnamon
• 1 3/4 cups (254 g) low FODMAP gluten-free all-purpose flour, (such as Bob’s Red Mill 1 to 1 Baking Flour)
• 1 teaspoon baking powder; use gluten-free if following a gluten-free diet
• 1 teaspoon baking soda
• 1/4 teaspoon salt
• 1/2 cup (113 g; 1 stick) unsalted butter, at room temperature, cut into pieces
• 1 cup (198 g) sugar
• 1 teaspoon vanilla extract
• 2 large eggs, (at room temperature)
• 1 cup (240 g) lactose-free sour cream, (at room temperature)
• 280 g (2 cups) diced peeled apples, (such as Pink Lady)