Apple Crisp Pie

Ingredients

• 1 graham cracker crust
• 1 large egg yolk
• 5 1/2 c. sliced apples
• 1 Tbsp. lemon juice
• 1/2 c. sugar
• 1/4 c. light brown sugar
• 3 Tbsp. all-purpose flour
• 1/4 tsp. salt
• 1/2 tsp. ground cinnamon
• 1/4 tsp. ground nutmeg
• 3/4 c. all-purpose flour
• 1/4 c. sugar
• 1/4 c. light brown sugar
• 1/3 c. butter