Gather the ingredients.
Preheat the oven to 375 F.
Combine the pineapple tidbits, the reserved 1/4 cup juice, and crushed pineapple in a 1 1/2-quart casserole dish.
Add the eggs, flour, sugar, and lemon juice and mix well.
Bake for 30 minutes.
Meanwhile, make the topping. In a medium bowl combine the flour, brown sugar, cheese, and pecans.
Stir in the melted butter and mix until large pieces form; do not over mix.
Remove the casserole from the oven and top with the crumbly cheese mixture.
Bake for another 25 to 30 minutes or until the top is browned and the casserole is bubbly.
Let cool for 10 to 15 minutes, then serve.