Preheat your oven to 375 degrees Fahrenheit. Line a baking sheet with Gefen Parchment Paper and set aside.

In a medium saucepan, heat the oil. Add the garlic and sauté until fragrant (about 30 seconds). Add the flour and mix using a whisk until crumbly. Slowly add in the broth while mixing until smooth and creamy. Add the spices, mushrooms, and broccoli. Mix well until combined. Remove from heat and set aside.

Roll out each puff pastry sheet to 1/8-inch thick. Add half the mixture down the center of each pastry lengthwise, leaving two inches on each side. Using a sharp knife, cut horizontal strips along both the left and the right of the filling. Fold the top and bottom strip over the broccoli mixture. Start braiding the pastry dough by folding over a strip from the left, then a strip from the right. Continue left, right, left, right until all of the strips are in place.

Carefully transfer both knishes to your prepared baking sheet using a spatula. Brush your beaten egg over top of both knishes and sprinkle with sesame seeds.

Bake on 375 degrees Fahrenheit for 40 to 45 minutes or until golden. Slice and serve warm.