Step 1: Preheat the oven to 350°F (175°C).
Step 2: Grease the 9x5-inch loaf pan and dust it lightly with flour.
Step 3: Beat the butter and 1 cup of sugar until light and fluffy (3-4 minutes).
Step 4: Add eggs one at a time, mixing well after each addition.
Step 5: Mix in sour cream, lime zest, and lime juice (1/3 cup).
Step 6: Whisk together flour, baking soda, and salt in a separate bowl, then add to wet ingredients.
Step 7: Fold in the blueberries gently.
Step 8: Pour the batter into the prepared loaf pan.
Step 9: Bake for 55-65 minutes or until a toothpick comes out clean.
Step 10: Cool in the pan for 10 minutes, then transfer to a cooling rack.
Step 11: Prepare the glaze with powdered sugar and remaining lime juice, then drizzle over the cooled cake.