Low FODMAP Chewy Oatmeal Raisin Cookies - FODMAP Everyday

Ingredients

• 1 1/2 cups (149 g) old fashioned rolled oats ((not quick or instant; use gluten free if following gluten free diet))
• 1 cup (145 g) low FODMAP gluten free all-purpose flour,
• 1 teaspoon cinnamon
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• 1/2 cup (1 stick; 115 g) unsalted butter, (at room temperature and cut into pieces)
• 1 cup (213 g) firmly packed light brown sugar
• 1 large egg, (at room temperature)
• 1/2 cup (80 g) dark raisins
• 1/3 cup (33 g) lightly toasted walnut halves, (chopped, optional)