WILLIAMSBURG Prepare your appetites: this week, there’s not just one, but two bakeoffs taking place in North Brooklyn. First, on Thursday, the Brooklyn Kitchen is holding a brownie bake-off in honor of Red Hook’s stellar bakery BAKED; owners Matt Lewis and Renato Poliafito, who recently released their second cookbook, Baked Explorations: Classic American Desserts Reinvented, will judge brownies brought in by competitors. A so-called “special” category will be judged by guest judge Natasha Lewin, the managing editor of High Times. Sampling the pastry treats is free, but votes for favorites cost $1 (which goes to the Greenpoint Reformed Church Hunger Program.) Then, on Sunday, Spacecraft will be hosting the 2nd Annual Brooklyn Pie Bake-Off Benefit. Pies, which must include homemade pie crust at least one local ingredient, will be paired with Brooklyn Brewery beer and Ronnybrook milk and judged by local foodie luminaries like Eatsy director Kitty Greenwald, blogger/author Cathy Erway, and 1st Prize Pies’ Allison Kave. Tickets cost $10, but include free drinks and three slices of pie, and proceeds go to creative barter network OurGoods.