Chewy baked oat bars with a drizzle of caramel across the top. This high calorie snack looks fancy, tastes indulgent, and stores in the freezer perfectly.
Preheat oven to 350°F (180°C). Line an 8x8-inch baking pan with parchment paper, leaving some overhang for easy removal.
In a large bowl, combine melted unsalted butter and brown sugar. Stir vigorously until well blended, ensuring butter is evenly distributed.
Beat in eggs and vanilla extract, mixing until smooth and pale. This step helps achieve chewy texture in the oat bars.
Fold in old-fashioned oats, all-purpose flour, and salt. Mix gently just until combined — do not overmix to avoid tough bars.
Spread batter evenly into prepared pan. Bake for 22–25 minutes, rotating pan halfway for even browning. Bars are done when golden and the center sets but remains slightly soft.
Cool completely in the pan; drizzle caramel sauce over the top in a zigzag pattern once bars are cool. Lift bars out using parchment and slice into 8 rectangles.