Apple Tarte Normande - SippitySup

Ingredients

• 6 tablespoon unsalted butter (divided)
• 1 tablespoon vegetable oil
• 1 ½ pound firm, tart apples (about 3 medium, peeled, cored and cut into ½‑inch dice)
• 2 tablespoon dark brown sugar
• 1 cup heavy cream
• ½ cup light brown sugar
• 3 large egg yolks
• 2 teaspoon cornstarch
• 2 teaspoon vanilla extract
• 1 (9 or 10-inch) pre-baked tart shell (in a tart ring with a removeable bottom)
• 1 cup sliced almonds (optional)