**6 cups thinly sliced apples**
**2 tablespoons unsalted butter**
**1/2 cup all-purpose flour**
**1/2 cup rolled oats**
**1/4 cup packed brown sugar**
**1/4 cup granulated sugar**
**1 teaspoon ground cinnamon**
**Pinch of salt**
**2 eggs**
**1 cup whole milk**
**Optional: 1 cup pecans, chopped for topping**