Preheat oven to 375 degrees F.
Combine strawberries with 1 tablespoon honey and lemon juice. Toss with a spoon until well combined. Set mixture aside to chill in the refrigerator for at least 20 minutes.
In a food processor, process 1 cup rolled oats until it reaches a flour consistency and transfer to a large mixing bowl. Add the remaining 1 cup rolled oats, baking powder, cinnamon, mashed banana, vanilla extract and remaining 1 tablespoon honey. Stir with a spoon until well combined.
Line an 8-inch by 8-inch baking dish with parchment paper. Transfer one-half to two-thirds of oat mixture into the baking dish and press into dish with a spatula.
Strain liquid from strawberry mixture and spread berries in a single layer over the oats in the baking dish. Crumble remaining oat mixture on top of the strawberry layer.
Bake the bars for 30-35 minutes or until the top is golden brown. Remove and cool before cutting into bars.
