I am guessing Waxy Pecans are a kind of pecan. Found this on the web
"Waxy Pecan Cake Bars"
written by Melba Thompson Carpenter
1-1/2 c br sugar; 3/4 c flour; 1-1/2 c pecans; 1 tsp vanilla; 3 egg whites unbeaten; 1/2 tsp BP; pinch of salt. (Vanilla is optional)
Mix egg whites and brown sugar thoroughly. Add pecans and other ingredients. Bake in greased and floured pan (shallow) in medium oven. Let cool and cut in bars. Bake about 20 minutes
sorry, it does not give the oven temp.