Step 1

Mix warm water and yeast for rolls together in a small bowl until dissolved. Let sit until bubbly, about 10 minutes.

Step 2

Meanwhile, combine butter, sugar, and salt in the bowl of a stand mixer fitted with the whisk attachment. Add hot water and whisk until butter is melted. Allow to cool for a few minutes, then mix in egg. Mix in yeast mixture, followed by 2 cups flour, mixing on high speed with the whisk attachment. Change to the dough hook attachment, add remaining flour, and mix until a nice ball of dough forms.

Step 3

Place dough into an oiled bowl, cover with plastic wrap, and let rise until doubled in size, 45 minutes to 1 hour.

Step 4

Preheat the oven to 350 degrees F (175 degrees C).

Step 5

Roll out dough on a lightly floured surface into a 1/2-inch thick rectangle.

Step 6

Mix melted butter and jam for filling together in a small bowl. Spread evenly over dough and sprinkle with sugar and cinnamon. Roll dough and pinch edges to seal. Cut into 12 equal rolls and place on a cookie sheet.

Step 7

Bake in the preheated oven until golden brown and firm to the touch when pressed gently in the center, about 20 minutes.

Step 8

While the rolls are baking, combine softened butter, milk, jam, and vanilla extract for frosting in a large bowl; beat until creamy. Gradually add powdered sugar, mixing until smooth. Add frosting with a pastry brush to warm cinnamon rolls.