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Preheat oven to 350°F. Lightly grease an 8-inch square baking pan. Line bottom and up 2 sides of pan with parchment paper. Allow about 1-inch overhang of paper on sides (for easier pan removal).
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Stir together oats, fruit, brown sugar, flour, sunflower seed kernels, wheat germ, and cinnamon in a large bowl.
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Lightly whisk egg whites in a medium bowl. Add yogurt, butter, and vanilla. Whisk to combine.
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Pour wet ingredients into dry ingredients and stir together until dry ingredients are moistened.
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Spread mixture evenly in prepared pan. Bake for 30 minutes or until center is set and top is lightly browned.
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Cool completely in pan on a wire rack. Run a knife between edge and pan on the 2 sides without parchment. Use the parchment to lift and transfer to a cutting board. Cut into bars.