Lay a silpat or parchment paper on a baking sheet.
Roll out the puff pastry. Lay out the spinach over the puff pastry, covering the surface of the pastry. Next layer the roasted red pepper and olives over the spinach. Sprinkle with feta and oregano.
Roll up the puff pastry lengthwise. Slice into 1/2 inch slices and place on baking sheet.
Bake for 20-23 minutes or until golden brown.
Serve pinwheels with dip.
If you can't use fresh spinach, you can use 1/2 cup defrosted cooked spinach, just be sure to drain well.
Feel free to omit the kalamative olives and use your favorite olives in these Greek roll-ups.
I have not tried making these rolls with crescent rolls in place of the puff pastry, but my guess is it would still work and be delicious.
Tzatziki Sauce Recipe: Grate 1/2 English cucumber, sprinkle with salt and then drain off excess liquid after 10 minutes. Mix together with 2 cups plain Greek yogurt, 3 cloves minced garlic, 1/2 teaspoon salt, 2 tablespoons fresh dill minced, 1 tablespoon olive oil and 1 tablespoon fresh lemon juice.