Low FODMAP Chocolate Chunk Nut Blondies - FODMAP Everyday

Ingredients

• 1 1/4 cups (182 g) low FODMAP gluten-free all-purpose flour, (such as Bob's Red Mill 1 to 1 Gluten-Free Baking Flour)
• 1/2 teaspoon (heaping) baking powder (use gluten-free if following a gluten-free diet)
• 1/4 teaspoon (heaping) salt
• 1/2 cup (1 stick; 113 g) unsalted butter, (cut into pieces)
• 1 cup (213 g) firmly packed light brown sugar
• 2 teaspoons vanilla extract
• 1 large egg, (at room temperature)
• 5 ounces (140 g) dark chocolate, (cut into 1/4-inch to 1/2-inch (6 mm to 12 mm) chunks, preferably 60% to 70%)
• 1/4 cup (25 g) pecan halves, (lightly toasted and chopped)
• 1/4 cup (25 g) walnut halves, (lightly toasted and chopped)