Preheat Oven: Preheat your oven to 350°F (175°C). Line an 8x8-inch baking dish with parchment paper.
Make the Oat Mixture: In a large bowl, mix together the oats, honey (or maple syrup), and melted butter until well combined. The mixture should stick together when pressed.
Assemble the Bars: Press ⅔ of the oat mixture firmly into the bottom of the prepared baking dish to form the crust. Then spread the raspberry preserves evenly over the crust. Lastly sprinkle the remaining oat mixture on top, pressing gently to adhere.
Bake: Bake for 20 minutes, or until the top is golden brown.
Cool and Serve: Let the bars cool completely in the pan before cutting into 12 squares.
