Step #1 Put the blueberries in a large but shallow baking dish.
Step #2 You can vary the amount of blueberries by half a c either way without making any difference; 6 1/2 c is what I happened to have on hand.
Step #3 Lightly Sprinkle top a few pinches of flour over the blueberries to help absorb the berry juice.
Step #4 You can omit the flour if you want; if you do, there will be more leftover berry juice in the bottom of the pan.
Step #5 Sprinkle top the lemon peel over the berries.
Step #6 The tartness of fresh lemon peel balances the sweetness of the berries & topping, so use the amount that suits your personal taste.
Step #7 Then go change the name of the recipe & put your own name in; you've customized it, you deserve it! :) Reduce the amount of lemon peel if you decide to cut back on the amount of topping.
Step #8 Mix together the remaining ingredients; it will be easier if the butter & brown sugar are nice & soft.