Like a materialistic lover, pie filling doesn’t play nice unless you fork over a lot of dough and give it some sugar. Have a slice with today’s Groupon to Keystone Bakery in Monessen and Belle Vernon. Choose from the following options:

• For $7, you get two 8-inch fruit or pumpkin pies (up to a $15.98 value). <p>
• For $15, you get $30 worth of artisan breads, pastries, and cakes. <p>
• For $25, you get $50 worth of artisan breads, pastries, and cakes. <p>

Operated by the same family for nearly 90 years, the ovens at Keystone Bakery fire up fresh, preservative-free treats every day according to a catalog of more 1,000 family recipes for breads, pies, and cakes. Blackberry pies pack in bushels of berries from Oregon and Washington ($7.99), and each caramel-apple-walnut pie ($7.50) mixes White House apples with nuts cracked by reliable Secret Service interrogation tactics. Other sweets such as the toasted-almond-whipped-cream cake ($12.09) or mini cream rolls ($10.49/24) close out holiday meals on a decadent note. The powerful aroma of fresh-baked french or marble-rye bread ($2.59+/loaf) drifts throughout both bakeries, triggering nostalgic sense memories of peanut-butter-and-jelly sandwiches and chalk circles etched on sidewalks. Those ordering pies should call the bakery at least 24 hours in advance to make sure crusted pastries are armed for spontaneous food fights.