Recognized as one of the premier outdoor recreation areas in Canada, Orillia is at the heart of Lake Country and home to boating, swimming, skiing, walking, hiking, cycling, and much more. Visit Orillia's museums and galleries, live theatre, events, festivals, natural attractions, and superior accommodations. Explore Orillia - it offers visitors the ultimate recreational and cultural experience.
Preheat oven to 350° and grease a 9”-x-9” pan with cooking spray. In a large bowl using a hand mixer, beat butter and both sugars until light and fluffy. Add eggs and vanilla and beat until combined. In another bowl, whisk together flour, baking powder, and salt. Add dry ingredients to wet ingredients and beat until just combined. Fold in Oreos, M&M’S, and chocolate chips. Press batter into prepared pan and bake until golden and still slightly soft in the middle, 25 to 30 minutes. Let cool completely before slicing into squares.