In a medium bowl, combine the Carbquick, coconut flour, 1 cup cheese, salt and paprika. Using a pastry blender, cut the butter into the flour mixture. Reserve one cup of mixture to put on top. Press the remaining mixture on the bottom and up the sides of a pie pan. Arrange the drained tuna and green beans on top of the crust.
In another clean bowl, beat the eggs with a mixer until they are light and fluffy. Stir in sour cream and the remaining half cup cheese, mayonnaise, and dry onion. Pour over tuna and sprinkle with the reserved crumb mixture.
Bake pie in 350 degree F oven for 35 to 40 minutes or until top is browned and pie has risen.
Let stand for 15 minutes before cutting and serving.
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Notes
If you want the crumb topping to be even crispier, sprinkle some shredded parmesan cheese on top during the last 5 minutes of baking.Try this recipe with canned chicken! It will still taste just as delicious.They might have a few more carbs, but replace the green beans with peas to change up the texture and taste.Let the hot tuna pie sit for several minutes before slicing. This helps the slices hold together better as well.