flapjack
US /ˈflæp.dʒæk/
UK /ˈflæp.dʒæk/

1.
a thick, flat cake, typically made of oats and butter, baked and eaten as a snack or dessert
:
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She packed a homemade flapjack for her hike.
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The café serves delicious chocolate chip flapjacks.
2.
(North American English) a pancake
:
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He ordered a stack of flapjacks with maple syrup.
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We had flapjacks and bacon for breakfast.