These are super simple, healthy, and my kids loved them!
1 pound frozen pizza crust dough, or frozen bread dough, thawed (I've also used refrigerated canned pizza crust)
1/2 cup fat-free sour cream
4 tsp Dijon mustard
1 1/2 tsp dried oregano
1/4 tsp black pepper
6 oz lean deli-sliced ham, diced
4 oz low-fat Swiss cheese
Preheat oven to 450. Coat a large baking sheet with cooking spray.
Divide dough into two equal portions. On a lightly floured surface, roll dough into two 10-in circles. Transfer circles to prepared baking sheet. Set aside.
Whisk together sour cream, mustard, oregano, and black pepper. Spread mixture all over both circles, to within 1-inch of edges. Top one half of each circle with half of each ham and cheese. Lift side of dough and fold over filling so it meets other side, forming a half moon. Pinch edges together to seal. Coat surfaces of calzones with cooking spray.
Bake until puffed up and golden brown, about 25-35 minutes. Let stand 5 minutes. Slice each calzone into thirds.