My hubby calls these little pieces of heaven in his mouth

1 pound ground chicken
1 cup ricotta cheese
1/2 cup grated Parmesan cheese
1/2 cup breadcrumbs
1 large egg
2 cloves garlic, minced
1 teaspoon dried Italian seasoning
Salt and pepper to taste
2 tablespoons olive oil
2 cups fresh spinach, chopped
2 tablespoons butter
2 tablespoons flour
2 cups milk
1 cup heavy cream
1 cup grated Parmesan cheese
Pinch of nutmeg
Salt and pepper to taste