2 large egg yolks, lightly beaten, room temperature
1 teaspoon vanilla extract
2 tablespoons butter, melted
2 tablespoons maple syrup
1 teaspoon maple flavoring
1/2 cup packed brown sugar
8 bacon strips, cooked and crumbled
1/4 cup raisins
In a small bowl, dissolve yeast in warm water. In a large bowl, mix flour, sugar and salt; cut in butter until crumbly. Add sour cream, eggs, yolks, vanilla and yeast mixture; stir to form a soft dough (dough will be sticky). Turn onto a floured surface; knead until smooth and elastic, about 6-8 minutes. Do not let rise. Divide in half. Roll out into two 12-in. squares; cover.
In a small bowl, combine melted butter, maple syrup and flavoring. Spread over each square to within 1/2 in. of edges. Sprinkle with brown sugar, bacon and raisins. Roll up each square jelly-roll style; pinch seams to seal.
Place on a parchment-lined rimmed baking sheet. Cover and let rise until nearly doubled, about 45 minutes. Preheat oven to 350°.Bake until golden brown, 35-40 minutes. Remove from pan to a wire rack to cool.