Prep: Preheat your oven to 350°F (175°C) and grease your 9x5-inch loaf pan.
Berry Prep: Dice the strawberries and toss them in 1 tbsp of flour in a small bowl until fully coated. Set aside.
Combine Wet: In a large bowl, whisk together the mashed bananas, egg, oil, yogurt, brown sugar, and vanilla until smooth.
Combine Dry: In a separate bowl, whisk together the flour, baking soda, cinnamon, and salt.
Fold: Add the dry ingredients to the wet mixture. Fold gently with a spatula just until combined. Gently fold in the floured strawberries.
Bake: Pour the batter into your prepared pan. Bake for 55–65 minutes, or until a toothpick inserted into the center comes out clean.
Cool: Let the loaf cool in the pan for 10 minutes, then move to a wire rack to cool completely before slicing.