Rhubarb Custard Pie

Ingredients

• 1 1/3 cups oil
• 1/2 cup milk (or dairy-free milk alternative)
• 1 heaping TBSP sugar
• 4 cups Mehl's Gluten-Free All-Purpose Flour
• 2 1/2 cups brown sugar (lightly packed)
• 6 TBSP Mehl's Gluten-Free All-Purpose Flour
• 6 large eggs
• 2 TBSP lemon juice
• 1 teaspoon cinnamon
• 8 cups diced rhubarb
• 2 TBSP butter (or dairy-free butter alternative, for oiling pans)