Lasagna with ricotta

2 teaspoons olive oil 1 1/2 lbs Italian sausage 3 cups chopped onions 4 garlic cloves , minced 2 teaspoons dried oregano 1/2 teaspoon crushed red pepper[...]

2 cups heavy cream 4 tablespoons sour cream or 4 tablespoons buttermilk 1 NIGHT BEFORE:. 2 Measure 2 cups heavy cream and place in medium bowl. To this add 4[...]