Preheat oven to 350 degrees F. Line 2 large baking sheets with parchment paper.
Sprinkle the flour onto a flat surface such as countertop or cutting board.
Carefully open the can and unroll the crescent dough sheet. Press slightly to make it an even shape rectangle. If using can of crescent rolls, roll them out the same way and press the seams together.
Spread the container of garlic and herb cheese spread over the entire dough sheet. Using an offset spatula with help this spread easier.
Arrange the roast beef slices to cover the dough.
Top evenly with the spinach. This can be chopped or using kitchen scissors, cut it into thin ribbons.
Sprinkle the shredded smokey cheddar cheese over all of the ingredients.
Roll the dough up tightly (jelly roll style), beginning at the long end. Pinch the seams together to seal. Press the ends with palms of hand to make it look even. Place on a pan or cutting board and chill in the refrigerator for 15 minutes.
Using a serrated knife, cut into slices about 1/2 inch thick. This will yield 20-24 pieces, Place the pinwheels on the parchment lined baking sheets.
Bake for 12-14 minutes, or until dough is a light golden brown. Remove from the oven and allow to set on the pan 5 minutes. Transfer to a cooling rack.
Arrange the pinwheels on a serving dish or platter. Serve warm or at room temperature. If desired, place mustard and horseradish sauce in small serving dishes for people to spread on the pinwheels.