01 - Combine flour, yeast, sugar, and salt in a large mixing bowl. Whisk warm milk, melted butter, and eggs in a separate bowl. Pour wet ingredients into dry ingredients and mix until soft dough forms. Knead by hand or stand mixer for 8-10 minutes until smooth and elastic.
02 - Place dough in a greased bowl, cover with plastic wrap or damp towel, and let rise in a warm place for 1 hour until doubled in size.
03 - Combine raspberries, sugar, and cornstarch in a small saucepan over medium heat. Cook stirring constantly for 5-7 minutes until thickened and jammy. Remove from heat, stir in vanilla and cinnamon, and cool completely.
04 - On a floured surface, roll dough into a 16x12-inch rectangle. Spread cooled raspberry filling evenly over dough, leaving a ½-inch border along edges.
05 - Starting from the long side, tightly roll dough into a log. Use sharp knife or bench scraper to slice into 12 equal rolls.
06 - Arrange rolls in a greased 9x13-inch baking dish. Cover and let rise for 30 minutes until puffy and noticeably expanded.
07 - Preheat oven to 350°F. Bake rolls for 22-25 minutes until lightly golden brown and cooked through. Center should spring back when touched.
08 - Whisk together powdered sugar, lemon juice, lemon zest, and 1 tablespoon milk. Add additional milk 1 teaspoon at a time until pourable consistency is reached.
09 - Drizzle glaze generously over warm rolls. Serve immediately while still slightly warm for best texture and flavor.