Blueberry Crumb Pie - cooking recipe

Ingredients

1 frozen pie crust
1 1/2 cups frozen blueberries
1 (21 ounce) can blueberry pie filling
1/2 teaspoon cinnamon
1 teaspoon lemon juice
1 teaspoon lemon zest
Topping
4 tablespoons salted butter, softened
1/4 cup granulated sugar
1/3 cup oats
1/3 cup flour
1/4 cup walnuts, finely chopped (optional)
1/4 cup sweetened coconut, shredded (optional)

Preparation

Preheat oven to 375 degrees.
Mix the frozen blueberries, pie filling, cinnamon, lemon juice and zest in a bowl. Then pour it into the piecrust. Set aside.
Mix the soften butter, sugar, and flour. Get it to a thick paste. Then add in the remaining ingredients. Mixture should be crumbly.
Pile the crumb mixture on the pie. Bake in the oven for 35-45 minutes. Pie should be golden brown and bubbling.