In a large bowl, combine the oats, chopped almonds, and chopped dried cranberries. Stir in the butter, peanut butter, honey, and vanilla extract until evenly combined.
Line an 8x8 inch square baking pan with parchment paper. Press the mixture firmly into the pan with the back of a spatula to create an even layer.
Place the pan in the refrigerator and let the bars chill for at least 2 hours, or until they firm up.
Once set, remove the bars from the pan by lifting the parchment paper. Cut into squares or rectangles and enjoy!
Customize your mix-ins: Swap cranberries for other dried fruit, use different nuts, or stir in mini chocolate chips, shredded coconut, or seeds (like chia or flax).
Press firmly into the pan: Packing the mixture tightly is key to granola bars that hold together once chilled.
Line the pan well: Using parchment paper makes it easy to lift the bars out cleanly for slicing.
Chill long enough: Allow the bars to set fully in the refrigerator so they firm up and cut cleanly.
Use a sharp knife: A sharp knife helps create neat edges without crumbling the bars.
Let them sit briefly before serving: If the bars are very cold, letting them rest at room temperature for a few minutes improves texture.