Bilad al-Sham Kitchen - Meat Sauce

Meat Sauce:

2 tablespoons olive oil3/4 kg ground beef1 small onion, finely choppedSalt and pepper to taste4 cloves garlic, minced1 chili pepper, chopped1/4 red bell pepper, finely chopped1 cup fresh tomato juice1/4 cup tomato paste1 teaspoon oregano1 tablespoon Mama"s Spice1 teaspoon sugarBéchamel Sauce:1/2 stick butter4 tablespoons flour3 cups milk1 cup cream1 tablespoon healthy chicken bouillon substituteA pinch of nutmegSalt and pepper1 cup shredded mozzarella cheese1 cup shredded Kashkaval cheese