Prepare the Dough: In a large mixing bowl, combine the all-purpose flour, 1/4 cup of sugar, baking powder, salt, baking soda, and ground cinnamon. Whisk the dry ingredients together until well combined. Next, add the softened butter, milk, and egg. Mix using a wooden spoon or your hands until the mixture forms a soft and slightly sticky dough.
Knead the Dough: Lightly flour your work surface and gently knead the dough for about 2 minutes until it becomes smooth and elastic. Be careful not to over-knead; you want the dough to remain tender.
Roll Out the Dough: Using a rolling pin, roll the dough into a rectangle shape, measuring approximately 12x9 inches. Ensure the thickness is even for uniform cooking.
Add the Filling: Sprinkle the remaining 1/4 cup of sugar evenly over the surface of the dough. Then, distribute the fresh raspberries and lemon zest across the dough. Lightly press the raspberries into the dough to secure them in place.
Roll Up the Dough: Starting from one of the long edges, carefully roll the dough tightly into a log shape. Once rolled, pinch the seam securely to prevent it from unraveling during baking.
Slice the Rolls: With a sharp knife or a dental floss, cut the log into 12 equal pieces, each about 1 inch thick. Place the rolled segments in a greased 9x13 inch baking pan, ensuring there's enough space for them to rise.
Proof the Rolls: Cover the baking pan with a clean kitchen towel and place it in a warm area. Allow the rolls to rise for about 30 minutes, or until they have doubled in size.
Preheat the Oven: While the rolls are rising, preheat your oven to 375°F (190°C), making sure it reaches the proper temperature before baking.
Bake the Rolls: Once the rolls have risen, bake them in the preheated oven for 20-25 minutes or until they are beautifully golden brown and fragrant.
Make the Glaze: In a small bowl, combine the powdered sugar with the fresh lemon juice. Whisk until you achieve a smooth, pourable consistency. If the glaze is too thick, you can add additional lemon juice, one teaspoon at a time.
Glaze the Rolls: After the rolls have baked to perfection, remove them from the oven and allow them to cool for a few minutes. Drizzle the lemon glaze generously over the warm rolls to create a deliciously sweet and tangy finish.
Notes
Serve warm and garnish with fresh raspberries and lemon zest.