Oatmeal Chocolate Chip Bars

Bahan-bahan (16 porsi)

• 1 cup butter (at room temperature)
• ¾ cup brown sugar (packed)
• ¼ cup gula pasir
• 2 large telur
• 1 tablespoon susu
• 1 tablespoon vanila
• 1 ½ cups all-purpose flour
• 2 cups old-fashioned rolled oats
• 1 ½ teaspoons soda kue
• ½ teaspoon garam
• 1 cup chocolate chunks (divided)
• 1 cup chocolate chips (divided)